Exhibit 4.2









                   The Northern Trust Company
                   Thrift-Incentive Plan
                   (As Amended and Restated Effective as of
                   January 1, 1989)




 
The Northern Trust Company
Thrift-Incentive Plan
(As Amended and Restated Effective as of January 1, 1989)

Contents

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Section                                                                    Page
                                                                        
       Article I. Name of Plan
1.1    Establishment and Last Amendment of the Plan                           1
1.2    Purpose of the Plan                                                    1
1.3    Provisions of this Plan                                                1
 
       Article II. Definitions
2.1    Definitions                                                            2
 
       Article III. Participation and Service
3.1    Participation                                                         11
3.2    Duration of Participation                                             11
3.3    Transferred or Rehired Employees                                      11
3.4    Vesting                                                               13
3.5    Break in Service                                                      15
3.6    One-Year Break in Service                                             15
 
       Article IV. Participant Salary Reduction
                   Contributions
4.1    Participant Salary Reduction Contributions                            17
4.2    Changing Rate of Salary Reduction Contributions                       18
4.3    Limitations on Salary Reduction Contributions                         18
4.4    Recharacterization and Return of Certain Salary
       Reduction Contributions                                               20
4.5    Treatment of Associated Matching Contribution                         21
4.6    Supplemental Company Contributions                                    21
4.7    Uniformed Services Employment and Reemployment Rights Act             21


                                       i

 
The Northern Trust Company
Thrift-Incentive Plan
(As Amended and Restated Effective as of January 1, 1989)

Contents

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Section                                                                    Page
                                                                        
       Article V. Company Contributions
5.1    Company Matching Contribution                                         22
5.2    Limitations on Deposits and Contributions                             25
5.3    Time of Matching Contributions                                        27
5.4    Forfeitures                                                           27
5.5    Limitations on Contributions                                          27
5.6    Rules Governing Matching Contributions                                28
5.7    Transfers from ESOP                                                   30
 
       Article VI. Investment Funds
6.1    Investment Funds                                                      31
6.2    Administration of Funds                                               31
6.3    Selection of Investment Funds                                         32
6.4    Transfers Between Funds                                               32
6.5    Voting Rights; Tender Offers                                          34
6.6    Individual Accounts                                                   36
 
       Article VII. Valuation and Adjustments
7.1    Valuation and Adjustments                                             37
 
       Article VIII. Benefits
8.1    Normal Retirement Date, Pension, Permanent Disability                 38
8.2    Death                                                                 38
8.3    Termination of Service                                                39
8.4    Deemed Cashouts                                                       39
8.5    Restrictions on Mandatory Distributions                               40
8.6    Required Distributions                                                40
8.7    Withdrawals as of Right                                               42
8.8    Hardship Withdrawals                                                  45
8.9    Loans to Participants                                                 48


                                       ii

 
The Northern Trust Company
Thrift-Incentive Plan
(As Amended and Restated Effective as of January 1, 1989)

Contents

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Section                                                                    Page
                                                                        
       Article IX. Distribution of Benefits
9.1    Termination of Service                                                52
9.2    Death                                                                 52
9.3    Time and Amount of Payment                                            52
9.4    Deferral of Payment of Benefit                                        52
9.5    Distributions from Northern Trust Stock Fund                          52
9.6    Direct Rollover of Eligible Rollover Distributions                    53
 
       Article X. Plan Administration
10.1   Powers                                                                55
10.2   Directions to Trustee                                                 55
10.3   Uniform Rules                                                         55
10.4   Reports                                                               56
10.5   Compensation                                                          56
10.6   Claims Procedure                                                      56
10.7   Indemnity for Liability                                               57
 
       Article XI. Amendment and Termination
11.1   Amendment                                                             58
11.2   Termination                                                           58
11.3   Merger, Sale                                                          58
11.4   Distribution Upon Termination                                         59
 
       Article XII.  Extension of Plan to Affiliates
12.1   Participation in the Plan                                             60
12.2   Withdrawal from the Plan                                              60

       Article XIII.  Top-Heavy Provisions                                   62
 

                                      iii

 
The Northern Trust Company
Thrift-Incentive Plan
(As Amended and Restated Effective as of January 1, 1989)

Contents

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Section                                                                    Page
                                                                        
       Article XIV.  Miscellaneous Provisions
14.1   Spendthrift Provisions                                                63
14.2   Incompetency                                                          63
14.3   Unclaimed Funds                                                       64
14.4   Rights Against the Company                                            64
14.5   Illegality of Particular Provision                                    65
14.6   Effect of Mistake                                                     65
14.7   No Discrimination                                                     65
14.8   Exclusive Benefit of Employees                                        65
14.9   Governing Law                                                         66


                                      iv

 
Article I. Name of Plan

1.1 Establishment and Last Amendment of the Plan

Effective April 1, 1958, The Northern Trust Company established a defined
contribution profit sharing plan qualified under Internal Revenue Code section
401(a) known as "The Northern Trust Company Thrift-Incentive Plan" (hereinafter
referred to as the "Plan"). The Plan is for the exclusive benefit of its
Eligible Employees (defined below). The Plan was last restated, effective as of
July 1, 1993, and was last amended as of September 21, 1993.

The Plan is hereby restated, effective as of January 1, 1989.

1.2 Purpose of the Plan

The purpose of this Plan is to permit Eligible Employees of the Company to make
tax-deferred savings for use upon their retirement, death, or other separation
from service.

1.3 Provisions of this Plan

The provisions of this Plan apply only to Members (or beneficiaries of Members)
who are eligible to participate in the Plan on or after January 1, 1989. Except
as so provided herein, any person who was covered under the Plan prior to
January 1, 1989, and whose Vesting Service terminated prior to January 1, 1989,
shall be entitled to receive under the Plan the rights and benefits, if any, in
accordance with the provisions of the Plan in effect on the date his or her
Vesting Service terminated.

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Article II. Definitions

2.1 Definitions

The following terms shall have the meaning specified in this Article II.

(a)  "ACCOUNT" means the separate accounts maintained for each Member which
     represents his or her total proportionate interest in the Thrift Trust as
     of any Valuation Date and which consists of the sum of the Member's--

     (1)  After-Tax Deposit Account,
     (2)  Basic Contribution Account,
     (3)  Matching Contribution Account,
     (4)  Before-Tax Deposit Account,
     (5)  ESOP Contribution Account,
     (6)  Rollover Deposit Account,
     (7)  Acquired Company Prior Plan Account.

(b)  "ACQUIRED COMPANY PRIOR PLAN ACCOUNT" means the aggregate of an acquired
     company's contributions (other than employer match), as adjusted, that have
     been transferred by an Employee to an Investment Fund from a retirement
     plan maintained by an Affiliate of the Company prior to its becoming an
     Affiliate or to such a plan that has been merged into the Plan.

(c)  "ACTUAL CONTRIBUTION PERCENTAGE" for a specified group of Participants for
     a given Plan Year means the average of the ratios, calculated separately
     for each Participant in such group, of: (a) the sum of the after-tax
     deposits, if any, contributed by the Participant to the Plan for such Plan
     Year and the Matching Contributions, if any, contributed by the Company on
     behalf of such Participant to the Plan for such Plan Year, to (b) the
     Participant's Salary for the period of time during such Plan Year in which
     he was a Participant.

(d)  "ACTUAL DEFERRAL PERCENTAGE" for a specified group of Participants for a
     given Plan Year means the average of the ratios, calculated separately for
     each Participant in such group, of: (a) the Salary Reduction Contributions,
     contributed by the Company on behalf of each such Participant for such Plan
     Year to (b) the Participant's Salary for the period of time during such
     Plan Year in which he was a Participant.

(e)  "AFFILIATE" means any corporation which is a member of the same controlled
     group of corporations (within the meaning of Code Section 414(b)) as the
     Company, or an unincorporated trade or business which is

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     under common control with the Company (within the meaning of Code Section
     414(c)), any organization which is a member of an affiliated service group
     (within the meaning of Code Section 414(m)) of which the Company is also a
     member, and any other entity required to be aggregated under Code Section
     414(o). For purposes of section 2.1(nn), this section 2.1(e) shall be
     modified as provided in section 415(h) of the Code.

(f)  "AFTER-TAX DEPOSIT ACCOUNT" means the aggregate of a Member's deposits, as
     adjusted, to an Investment Fund made pursuant to section 4.1 from the
     Member's Salary which is subject to federal income tax in the year paid.

(g)  "AGGREGATE LIMIT" means the sum of (1) 125 percent of the greater of (I)
     the Actual Deferral Percentage of non-Highly Compensated Participants for
     the Plan Year or (II) the Actual Contribution Percentage of non-Highly
     Compensated Participants under the Plan subject to Code Section 401(m), and
     (2) the lesser of 200% or two plus the lesser of such Actual Deferral
     Percentage or Actual Contribution Percentage. "Lesser" is substituted for
     "greater" in (1) above, and "greater" is substituted for "lesser" after
     "two plus the" in (2) if it would result in a larger Aggregate Limit.

(h)  "ANNUAL ADDITIONS" means the total of: (1) Company or Participating
     Employer contributions allocated to a Participant under this Plan and any
     Related Plan during any Limitation Year; (2) the amount of Employee
     contributions made by the Participant in this Plan and any Related Plan;
     and (3) Forfeitures allocated to a Participant under this Plan and any
     Related Plan.

(i)  "BASIC CONTRIBUTION ACCOUNT" means the aggregate of the Company's
     contributions, as adjusted, made for Plan Years prior to January 1, 1989 to
     an Investment Fund on behalf of a Member.

(j)  "BEFORE-TAX DEPOSIT ACCOUNT" means the aggregate of the deposits, as
     adjusted, to an Investment Fund made pursuant to section 4.1 in which a
     Member elected to have the Company contribute amounts to the Thrift Trust
     for his or her benefit in lieu of the Company paying the amounts to the
     Member in cash or depositing the amounts to the Member's After-Tax Deposit
     Account.

(k)  "BENEFICIARY" means the person or persons designated as such by the
     Participant on a form supplied by the Committee, provided that, a


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     married Participant may designate a Beneficiary other than the
     Participant's Spouse only if the requirements of section 8.2 are met. Upon
     the death of a Participant, if there is no designated Beneficiary then
     living, or if the designation is for any reason ineffective, as determined
     by the Committee, the Participant's Beneficiary shall be the Participant's
     Spouse, or if none, as directed in the Participant's will admitted to
     probate, or if there is no will, to the Participant's estate to be
     distributed as provided by the laws of descent of the state of Illinois in
     effect at the time of the Participant's death.

(l)  "BOARD OF DIRECTORS" OR "BOARD" means the Board of Directors of the
     Company.

(m)  "BREAK IN SERVICE" means the event described in section 3.5.

(n)  "CODE" means the Internal Revenue Code of 1986, as amended.

(o)  "COMMITTEE" means the Employee Benefit Administrative Committee of the
     Company, as constituted from time to time, which has the responsibility for
     administering the Plan and which shall be deemed to be the Plan
     Administrator and the Named Fiduciary for the purposes of ERISA.

(p)  "COMPANY" means The Northern Trust Company, an Illinois state bank, and its
     successors and assigns.

(q)  "EFFECTIVE DATE" means January 1, 1989.

(r)  "ELIGIBLE EMPLOYEE" means any Employee of the Company or a Participating
     Employer other than (1) an Employee employed by any office or branch of the
     Company located in a foreign country who, as to the United States, is a
     nonresident alien, and (2) an Employee who (A) as to the United States, is
     a foreign national, (B) is working for the Company or a Participating
     Employer at a location in the United States, and (C) is covered by a
     retirement plan sponsored by a non-U.S. Affiliate in the country in which
     an Affiliate is located.

(s)  "EMPLOYEE" means an individual employed by the Company or an Affiliate. A
     person who is considered a "leased employee" (as defined below) of the
     Company or an Affiliate shall not be considered an Employee for purposes of
     the Plan. If such a person subsequently becomes an Employee, and thereafter
     participates in the Plan, that person shall receive Vesting Service for
     employment as a leased employee

                                      -4-

 
     except to the extent that the requirements of Section 414(n)(5) of the Code
     were satisfied with respect to such Employee while he or she was a leased
     employee. For purposes of the Plan a leased employee is a person who is not
     employed by the Company or an Affiliate but who performs services for the
     Company or an Affiliate pursuant to an agreement between the Company or an
     Affiliate and a leasing organization, other than a person described in Code
     section 414(n)(5), if such person performed the services for a year and the
     services are of a type historically performed by employees.

(t)  "ERISA" means the Employee Retirement Income Security Act of 1974, as
     amended.

(u)  "ESOP CONTRIBUTION ACCOUNT" means the aggregate of transfers, as adjusted,
     to an Investment Fund from a Member's account in The Northern Trust
     Employee Stock Ownership Plan in accordance with section 5.7.

(v)  "FORFEITURES" means the unvested portion of a Participant's Accounts that
     becomes forfeited pursuant to section 8.3.

(w)  "FORMER PARTICIPANT" means a person who has been a Participant but who has
     incurred a Break in Service.

(x)  "HOUR OF SERVICE" means an hour for which an Employee is paid or entitled
     to payment for the performance of duties for the Company or an Affiliate.

(y)  "HIGHLY COMPENSATED PARTICIPANT" means an Eligible Employee who, during the
     current Plan Year or the preceding Plan Year, (a) was at any time a five-
     percent owner of the Company, (b) received compensation (as defined in
     section 5.2(f)(3)) from the Company in excess of $75,000 (or such greater
     amount provided by the Secretary of the Treasury pursuant to Section 414(q)
     of the Code), (c) received compensation from the Company in excess of
     $50,000 (or such greater amount provided by the Secretary of the Treasury
     pursuant to Section 414(q) of the Code) and was in the top paid group of
     Employees for such Plan Year, or (d) was at any time an officer of the
     Company and received compensation from the Company greater than 50% of the
     amount in effect under Section 415(b)(1)(A) of the Code for such Plan Year.
     The provisions of Section 414(q) of the Code shall apply in determining
     whether a Participant is a Highly Compensated Participant.  Highly
     Compensated Participants shall be identified based upon only the current
     Plan Year to the extent 

                                      -5-

 
     permitted by Section 414(q) of the Code and regulations issued thereunder.

(z)  "INACTIVE PARTICIPANT" means a person who was a Participant who is
     transferred to and is in a position of employment either--

     (1)  as an Employee where he or she is not an Eligible Employee; or

     (2)  as an Employee of an Affiliate which has not adopted this Plan.

(aa) "INVESTMENT FUND" and "FUND" mean any Fund of the Thrift Trust described in
     section 6.1.

(bb) "LIMITATION YEAR" means the 12-consecutive-month period to be used in
     determining the Plan's compliance with section 415 of the Code and the
     regulations thereunder. The Limitation Year shall be the calendar year
     unless the Company elects to use another 12-month period.

(cc) "MATCHING CONTRIBUTION ACCOUNT" means the aggregate of the Company's
     contributions, as adjusted, to an Investment Fund on behalf of a Member
     made pursuant to section 5.1.

(dd) "MEMBER" means either a Participant, Inactive Participant, or a Former
     Participant.

(ee) "NORMAL RETIREMENT DATE" means the later of (1) the date on which a Member
     attains 65 years of age, or (2) the fifth anniversary of the date on which
     the Member became eligible to make contributions under section 3.1 or under
     any plan with respect to amounts held in the Acquired Company Prior Plan
     Account on behalf of such Member.

(ff) "ONE-YEAR BREAK IN SERVICE" means a period of time described in section
     3.6.

(gg) "PARENTAL LEAVE" shall mean an absence from employment with the Company or
     an Affiliate because of (1) the Employee's pregnancy, (2) the birth of the
     Employee's child, (3) the placement of a child with the Employee in
     connection with the Employee's adoption of the child, or (4) caring for
     such child immediately following such birth or placement, provided that,
     the Employee furnishes to the Company or Affiliate such timely information
     that the Company or Affiliate may reasonably require to establish (A) that
     the absence from work is for one of the 

                                      -6-

 
     reasons specified and (B) the number of days for which there was such an
     absence.

(hh) "PARTICIPANT" means an Eligible Employee who meets the requirements of
     section 3.1 and who is participating in the Plan.

(ii) "PARTICIPATING EMPLOYER" means any Affiliate which has adopted and is
     participating in the Plan in accordance with Article XII.

(jj) "PENSION PLAN" means The Northern Trust Company Pension Plan.

(kk) "PERMANENT DISABILITY" means any physical or mental injury, illness or
     incapacity which, in the sole judgment of the Committee based on the
     medical reports of a physician selected by the Committee and other evidence
     satisfactory to the Committee, currently and permanently prevents an
     Employee from satisfactorily performing the Employee's usual duties for the
     Company or an Affiliate or the duties of such other position or job which
     the Company or an Affiliate makes available to the Employee and for which
     such Employee is qualified by reason of training, education or experience.
     To the extent that a disability case manager determines whether an Employee
     is permanently disabled under the Company's short or long-term disability
     plan, such determination shall be binding with respect to the question of
     whether the Employee has incurred a Permanent Disability hereunder.

(ll) "PLAN" means The Northern Trust Company Thrift-Incentive Plan, as amended.

(mm) "PLAN YEAR" means the calendar year.

(nn) "RELATED PLAN" means any other defined contribution plan (as defined in
     section 415(k) of the Code) maintained by the Company or an Affiliate.

(oo) "ROLLOVER DEPOSIT ACCOUNT" means the aggregate of a Member's rollover
     deposits, as adjusted, to an Investment Fund made pursuant to section 4.1.

(pp) "SALARY" means the base salary paid by the Company to a Participant, plus
     any amounts paid as shift differential, but exclusive of severance pay or
     any other types of compensation.  Base salary includes amounts which the
     Participant elects under section 4.1 to have contributed to his or her
     Before-Tax Deposit Account and any amounts contributed by or on behalf of
     the Participant to a cafeteria plan established by the Company.

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     Notwithstanding any provision of this Plan to the contrary, a Participant's
     Salary for any calendar year prior to January 1, 1994, shall not exceed
     $200,000 (or such other amount as established by the Secretary of the
     Treasury pursuant to section 401(a)(17) of the Code).

     In addition to other applicable limitations set forth in the Plan, and
     notwithstanding any other provision of the Plan to the contrary, the Salary
     of each Employee taken into account under the Plan shall not exceed the
     annual compensation limit under section 401(a)(17) of the Code. The annual
     compensation limit under section 401(a)(17) is $150,000, as adjusted by the
     Commissioner of the Internal Revenue Service for increases in the cost of
     living in accordance with Code section 401(a)(17)(B). The cost-of-living
     adjustment in effect for a calendar year applies to any period, not
     exceeding 12 months, over which Salary is determined (the "determination
     period") beginning in that calendar year. If a determination period
     consists of fewer than 12 months, the annual compensation limit will be
     multiplied by a fraction, the numerator of which is the number of months in
     the determination period, and the denominator of which is 12.

     In determining the Salary of a Participant for purposes of this limitation,
     the rules of Code section 414(q)(6) shall apply, except that, in applying
     such rules, the term "family" shall include only the Spouse of the
     Participant and any lineal descendants of the Participant who have not
     attained age 19 before the close of the Plan Year. If, as a result of the
     application of these rules, the adjusted dollar limitation of Code section
     401(a)(17) applicable to family members is exceeded, then the dollar
     limitation shall be prorated among the affected individuals in proportion
     to each such individual's Salary as determined under this section 2.1(pp)
     before applying the limitation.

(qq) "SALARY REDUCTION AGREEMENT" means an agreement entered by a Participant
     pursuant to Section 4.1 of the Plan.

(rr) "SALARY REDUCTION CONTRIBUTIONS" means amounts contributed by the Company
     on behalf of Participants pursuant to the provisions of Section 4.1 of the
     Plan.

(ss) "SEVERANCE ELIGIBLE PARTICIPANT" means, effective July 1, 1995, a
     Participant whose employment has terminated in a manner entitling such
     Participant to severance pay under any formal severance plan, program or
     arrangement maintained by The Northern Trust Company providing severance
     benefits to certain employees as a result of job elimination or 

                                      -8-

 
     termination of employment due to the acquisition or disposition of a
     business entity.

(tt) "SPOUSE" means the person to whom an Employee is married or, in the case of
     a deceased Employee, the person to whom an Employee was married on the date
     of the Employee's death.

(uu) "SUPPLEMENTAL COMPANY CONTRIBUTION" means a contribution made by the
     Company pursuant to the provisions of Section 4.6 of the Plan.

(vv) "THRIFT TRUST" means the trust created by a Declaration of Trust executed
     by The Northern Trust Company as of April 1, 1958 for purposes of the Plan,
     as amended.  The Thrift Trust forms a part of the Plan.

(ww) "TRUSTEE" means The Northern Trust Company as Trustee of the Thrift Trust.

(xx) "VALUATION DATE" means a date as of which the Investment Funds are valued
     and the accounts of Participants adjusted.  Prior to March 14, 1995,
     Valuation Dates shall be the last day of each calendar month, unless
     otherwise determined from time to time by the Committee. During March of
     1995, the Plan shall be converted to a daily valuation system, and
     "Valuation Date" shall mean each business day from and after March 14,
     1995.

(yy) "VALUATION PERIOD" means the period commencing on the day following a
     Valuation Date and ending on the next Valuation Date.

                                      -9-

 
(zz)  "VESTED PORTION" means that percentage of a Participant's Matching
      Contribution Account constituting the Participant's irrevocable right to
      such Account, as indicated in the following vesting schedule:


      =====================================

      PARTICIPANT'S YEARS
      OF VESTING SERVICE         VESTED
      WITH THE COMPANY           PERCENTAGE

      -------------------------------------

      Less than 2 years          0%
      2 years but less than 3    20%
      3 years but less than 4    40%
      4 years but less than 5    60%
      5 years but less than 6    80%
      6 or more years            100%

      A Participant is fully vested in his or her Matching Contribution Account
      after the Participant becomes Permanently Disabled, dies, or reaches
      Normal Retirement Age. A Participant is always fully vested in his or her
      After-Tax Deposit Account, Before-Tax Deposit Account, Rollover Deposit
      Account, ESOP Contribution Account, and Basic Contribution Account. Unless
      otherwise provided, the Vested Portion of a Participant's balance in the
      Acquired Company Prior Plan Account shall be determined based on the
      appropriate vesting provisions in the Plan to which such balances are
      attributable.

      UNVESTED PORTION means the remaining Account balance after subtracting the
      Vested Portion.

(aaa) "VESTING SERVICE" means the period of employment credited under section
      3.4.

                                      -10-


 
Article III. Participation and Service

3.1 Participation

(a)  An Eligible Employee shall first become eligible to have contributions made
     on his or her behalf after the latest of (1) the first day of the calendar
     quarter following the day on which he or she has completed one full year of
     Vesting Service, (2) the day on which he or she becomes an Eligible
     Employee, or (3) his or her twenty-first birthday.

(b)  If an Eligible Employee does not begin to have contributions made on his or
     her behalf when first eligible under section 3.1(a), he or she may
     subsequently elect to have contributions made on his or her behalf
     effective (i) before July 1, 1993, as of the first day of any calendar
     quarter after meeting such requirements, (ii) from July 1, 1993 through
     March 1, 1995, as of the first day of any month after meeting such
     requirements, or (iii) effective April 1, 1995, as of the first day of any
     payroll period after meeting such requirements.

(c)  Subject to section 2.1(k), at the time a Participant elects to have
     contributions made under section 4.1, the Participant may designate a
     Beneficiary to receive any benefit payable under the provisions of section
     8.2. At any time and from time to time thereafter, the Participant may
     make, change or revoke a Beneficiary designation. No designation,
     revocation, or change shall be effective unless made in writing and
     delivered to the Committee prior to the Participant's death.

(d)  An Eligible Employee may agree with the Company that the Eligible Employee
     shall not participate in the Plan.

3.2 Duration of Participation

An Eligible Employee who becomes a Participant shall continue to be a
Participant or Inactive Participant until he or she incurs a Break in Service,
and also shall continue to be a Member thereafter for as long as he or she is
entitled to receive any benefits hereunder.  After receiving all benefits to
which he or she is entitled hereunder, he or she shall cease to be a Member
unless and until he or she thereafter becomes eligible to again become a
Participant.

3.3 Transferred or Rehired Employees

The following rules shall be applicable to Employees who (a) become Participants
because of transfer to a status qualifying for coverage under the Plan, (b)
become Inactive Participants, (c) transfer to a status not qualifying for

                                      -11-

 
coverage after meeting the requirements of section 3.1 but before becoming
Participants, or (d) are rehired by the Company:

(a)  An Employee who shall be transferred into employment where he or she
     becomes an Eligible Employee hereunder shall be credited with Vesting
     Service computed for all his or her employment with the Company and any
     Affiliate, before and after such transfer.

(b)  Any Participant who shall be transferred into employment as an Employee
     where he or she becomes an Inactive Participant shall continue to receive
     credit for Vesting Service under this Plan during the period he or she is
     an Inactive Participant.

(c)  Any Eligible Employee who shall meet the requirements of section 3.1 but
     shall be transferred into employment as an Employee but not as an Eligible
     Employee, before becoming a Participant, shall no longer be eligible to
     elect to have contributions made on his or her behalf hereunder. Any such
     Employee shall continue to accrue Vesting Service during the period
     computed for all of the Employee's employment with the Company and any
     Affiliate.

(d)  An Employee who has a Break in Service and is subsequently reemployed by
     the Company or an Affiliate shall be considered a new Employee for purposes
     of section 3.1, unless he or she was credited with at least one year of
     Vesting Service prior to his or her Break in Service. In such case, the
     Employee shall become eligible to have contributions hereunder made on his
     or her behalf (i) before January 1, 1995, on the first day of the first
     Valuation Period in which such person is so reemployed, and (ii) from and
     after January 1, 1995, on the first day of the first payroll period
     following such reemployment.

     (1)  By written notice to the Committee after his or her reemployment, an
          Employee who has not had five consecutive One-Year Breaks in Service
          may deposit with the Trustee an amount which shall be equal to the
          aggregate value of the distributions from his or her Account at the
          time of his or her previous Break in Service. All deposits must be
          made in cash and in a single lump sum. The deposits must be made
          within five years after the Employee is reemployed.

          The Trustee shall allocate an Employee's deposits made to satisfy the
          requirements of this section 3.3(d) as follows:

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          (A)  An Employee's deposits which are rollover deposits under section
               4.1 shall be allocated to the Employee's Rollover Deposit
               Account.

          (B)  All other deposits shall be allocated to the Employee's After-Tax
               Deposit Account.

     (2)  In the case of a reemployed Employee who does not have five
          consecutive One-Year Breaks in Service, the Company shall contribute
          to the Matching Contribution Account of such Employee the amount, if
          any, forfeited at the time of the Employee's termination of service,
          if and only if the Employee makes the deposits permitted under
          paragraph (1) above or the Employee did not receive a distribution at
          or after the time of his or her previous termination of service. The
          Company's contribution shall be made concurrently with the Employee's
          repayment if applicable, otherwise upon the date of his or her
          reemployment.

          For each other reemployed Employee, his or her beginning balance in
          each of his or her Accounts shall be zero, and his or her previous
          Forfeiture, if any, shall not be restored.

3.4 Vesting

An Employee shall receive credit for Vesting Service for the period commencing
with the Employee's date of hire with the Company or an Affiliate and ending on
the date the Employee incurs a Break in Service. Vesting Service shall be
calculated in accordance with reasonable and uniform standards and policies
adopted by the Company from time to time, which standards and policies shall be
consistently observed subject, however, to the following:

(a)  Vesting Service shall be computed on the following bases: (i) prior to July
     1, 1993, an Employee shall receive credit for each calendar quarter during
     which the Employee earned at least one (1) Hour of Service or otherwise
     would receive credit for Vesting Service pursuant to subsection (a) above;
     and (ii) from and after July 1, 1993, an Employee shall receive credit for
     each calendar month during which the Employee earned at least one (1) Hour
     of Service or otherwise would receive credit for Vesting Service pursuant
     to subsection (b) below.

(b)  An Employee shall earn Vesting Service for all periods of active employment
     with the Company or an Affiliate, and for the following periods that are
     not active employment but that precede a Break in Service:

                                      -13-

 
     (i)    an approved unpaid leave of absence from the Company or an Affiliate
            that is granted according to uniform and nondiscriminatory
            standards, but only if the Employee returns to work with the Company
            or an Affiliate upon the termination of such leave of absence;

     (ii)   effective August 5, 1993, an absence from work with the Company or
            an Affiliate under the Family and Medical Leave Act of 1993, but
            only if the Employee returns to work with the Company or an
            Affiliate upon the termination of such period of absence;

     (iii)  a period of up to one (1) year during which an Employee is on a
            Parental Leave;

     (iv)   an absence from work with the Company or an Affiliate on account of
            military service with the armed forces of the United States, but
            only if the Employee reports for work within the period required
            under law pertaining to veteran's reemployment rights.

(c)  If an Employee incurs a Break in Service, but returns to employment with
     the Company or an Affiliate prior to incurring a One-Year Break in Service
     (as defined in Section 3.6), the period commencing on the date the Break in
     Service began and ending on the date such Employee is reemployed shall be
     counted as Vesting Service. Notwithstanding the preceding sentence, if the
     Break in Service occurs during a period of absence from active employment,
     the Employee shall not receive Vesting Service under the preceding sentence
     unless such Employee returns to employment before the first (1st)
     anniversary of the first day of such absence.  If an Employee suffers a
     One-Year Break in Service and the Employee is thereafter reemployed by the
     Company or an Affiliate, such Employee's Vesting Service before such One-
     Year Break in Service shall be added to the Employee's Vesting Service
     after reemployment.

(d)  A Participant's Vesting Service shall not include periods of service with
     an entity prior to the date it became an Affiliate, except as provided in
     Schedule A hereto.

(e)  A Severance Eligible Participant shall receive credit for one (1) year of
     Vesting Service beyond that earned pursuant to the foregoing.

(f)  All periods of Vesting Service shall be aggregated; provided, however, that
     a Participant shall not receive multiple credit for Vesting Service with
     respect to any single period.

                                      -14-

 
3.5 Break in Service

(a)  A "Break in Service" shall occur on earliest of:

     (i)  the date the Employee quits, is discharged, retires, or dies; or

     (ii) the first anniversary of the date the Employee separates from service
          with the Company or an Affiliate for any reason other than the reasons
          set forth in paragraph (i) above, such as vacation, holiday, sickness,
          disability, leave of absence or layoff.

(b)  The fact that an Employee separates from service with the Company or an
     Affiliate on account of military service with the armed forces of the
     United States shall not constitute a Break in Service unless the Employee
     fails to report to work within the period required under law pertaining to
     veteran's reemployment rights, in which case the Break in Service shall
     occur on the earlier of (i) the expiration of the period by which such
     Employee was required by law to report back to work or (ii) the first
     anniversary of the date the Employee separated from service.

(c)  A Break in Service shall end on the date on which an Employee again
     performs an Hour of Service for the Company or an Affiliate.

(d)  The fact that an Employee who is a Participant becomes an Inactive
     Participant shall not constitute a Break in Service, but the foregoing
     rules shall continue to apply to such an Employee during the period he or
     she is an Inactive Participant.

(e)  Effective August 5, 1993, the fact that an Employee is absent from work
     under the Family and Medical Leave Act of 1993 shall not constitute a Break
     in Service if the Employee returns to work with the Company or an Affiliate
     after such period of absence.

3.6 One-Year Break in Service

(a)  The term "One-Year Break in Service" means each 12-consecutive-month period
     beginning on the date an Employee incurs a Break in Service under Section
     3.5 and ending on each anniversary of such date, provided that such
     Employee does not perform an Hour of Service for the Company or any
     Affiliate during such period.

(b)  Solely for purposes of determining whether a One-Year Break in Service has
     occurred, but not for purposes of determining Vesting Service or Credited
     Service, in the case of an Employee who is on Parental Leave, the
     Employee's Break In Service shall be deemed to occur on the second (2nd)

                                      -15-

 
     anniversary of the first day of such absence, provided the Employee does
     not perform an Hour of Service for the Company or any Affiliate during such
     period of absence. The period of time between the first (1st) and second
     (2nd) anniversaries of a Parental Leave shall not be counted as a Break in
     Service, Vesting Service or Credited Service.

                                      -16-

 
Article IV. Participant Salary Reduction Contributions

4.1 Participant Salary Reduction Contributions

An Eligible Employee who meets the requirements of section 3.1 (or upon
reemployment, section 3.3) may enter into a Salary Reduction Agreement, pursuant
to which the Employee authorizes the Company to deduct an amount of money from
the Employee's Salary and deposit it with the Trustee for investment as the
Employee shall have directed as provided in section 6.3.  A Salary Reduction
Agreement shall be in such written, electronic or other form, as the Committee
shall establish, and shall be entered into on or before such reasonable and
nondiscriminatory deadline as is specified by the Committee. Subject to section
4.7, the amount elected must equal 1 percent of the Employee's Salary or any
multiple thereof not exceeding 12 percent.  The amount shall be deposited to the
Employee's After-Tax Deposit Account or to his or her Before-Tax Deposit
Account, or partly to each in whole percentages, as designated by the Employee.
Deposits to an Employee's Before-Tax Deposit Account in a calendar year may not
exceed $7,627 (less any other contributions made to other plans qualified under
section 401(k) of the Internal Revenue), adjusted for increases in the cost of
living as provided in Code section 415(d), and any excess deposits shall be made
to his or her After-Tax Deposit Account. Salary Reduction Contributions by an
Employee under this section 4.1 may be suspended pursuant to section 8.8(b)(2).

Amounts deposited to the Employee's Before-Tax Deposit Account pursuant to this
section 4.1 shall be considered as contributions made by the Company on behalf
of the Employee to the Thrift Trust under a qualified cash or deferred
arrangement as defined in section 401(k)(2) of the Code so that the amounts will
not be included in the Employee's income for federal income tax purposes in the
year of contribution.  Amounts deposited to the Employee's After-Tax Deposit
Account shall be considered as deposits made by the Employee from his or her
Salary which is subject to federal income tax in the year paid.

With authorization by the Committee, an Eligible Employee may make a rollover
deposit to the Plan from a qualified plan, an employee annuity, an individual
retirement account, or an individual retirement annuity, as described in
sections 402(a)(5), 403(a)(4), and 408(d)(3) of the Code.  The amount shall be
deposited in cash to the Employee's Rollover Deposit Account.  An Eligible
Employee who is not otherwise a Participant in the Plan shall be considered as a
Participant solely for purposes of his or her Rollover Deposit Account.  The
Committee shall authorize and regulate the making of rollover deposits in
accordance with uniform and nondiscriminatory rules.

4.2 Changing Rate of Salary Reduction Contributions

                                      -17-

 
A Participant may change the rate of or terminate his or her Salary Reduction
Contributions as of the first day of any subsequent Valuation Period by entering
into a new Salary Reduction Agreement; provided, however, that no Salary
Reduction Agreements designating a change or termination shall be accepted
during February 1995.  Any new or changed rate shall comply with the
requirements of section 4.1.  Changes may be effected no more than once each
payroll period.  Before January 1, 1995, changes may be made no more than 6
times in a calendar year.  Changes shall be subject to such deadlines, and shall
be in such form as the Committee shall determine.

4.3 Limitations on Salary Reduction Contributions

(a)  Notwithstanding anything to the contrary contained elsewhere in the Plan or
     contained in any Salary Reduction Agreement, but subject to section 4.7,
     all Salary Reduction Agreements entered into with respect to any Plan Year
     shall be valid only if one of the tests set forth in subsection (b) of this
     section 4.3 is satisfied for such Plan Year.  In determining whether such
     tests are satisfied, all contributions to a Before-Tax Deposit Account, and
     excess contributions of a Highly Compensated Participant to his or her
     After-Tax Deposit Account, if any, made with respect to such Plan Year
     shall be considered.

(b)  For each Plan Year the Actual Deferral Percentage for Highly Compensated
     Participants shall bear to the Actual Deferral Percentage for all other
     Participants a relationship that satisfies either of the following tests:

     (i)  The Actual Deferral Percentage for Highly Compensated Participants is
          not more than the Actual Deferral Percentage of all other Participants
          multiplied by 1.25; or

     (ii) The Actual Deferral Percentage for Highly Compensated Participants is
          not more than the Actual Deferral Percentage for all other
          Participants multiplied by two and the excess of the Actual Deferral
          Percentage for the group of Highly Compensated Participants over that
          of all other Participants is not more than two percentage points.

(c)  If at the end of any Plan Year neither of the tests set forth in subsection
     (b) of this section 4.3 is satisfied for such Year, then:

     (i)  Salary Reduction Agreements entered into for that Plan Year by Highly
          Compensated Participants shall be valid only to the extent permitted
          by one of the tests set forth in subsection (b) of this section, and
          Salary Reduction Contributions made by the Company

                                      -18-

 
            for such Plan Year for Highly Compensated Participants shall be
            reduced in the manner set forth in subsection (c)(ii) to the extent
            necessary to comply with one of the tests set forth in subsection
            (b) of this Section. All Salary Reduction Contributions so reduced,
            adjusted for earnings, gains and losses allocable thereto, shall be
            allocated and distributed in the manner provided in section 4.4.

     (ii)   Reductions pursuant to subsection (i) above shall be effected with
            respect to Highly Compensated Participants pursuant to the following
            procedure: The Actual Deferral Percentage of the Highly Compensated
            Participant with the highest Actual Deferral Percentage shall be
            reduced to the extent necessary to cause such Highly Compensated
            Participant's Actual Deferral Percentage to equal the Actual
            Deferral Percentage of the Highly Compensated Participant with the
            next highest Actual Deferral Percentage. This process shall be
            repeated until the Plan satisfies one of the tests set forth in
            subsection (b) for such Plan Year.

     (iii)  Salary Reduction Agreements entered into by all Participants who are
            not Highly Compensated Participants shall be valid and Salary
            deferral contributions made by the Company for such Participants
            shall not be changed.

            The calculations, reductions and allocations required by this
            section 4.3 and section 4.4 shall be made by the Company with
            respect to a Plan Year at any time prior to the close of the
            following Plan Year.

(d)  If at any time during a Plan Year the Company, in its sole discretion,
     determines that neither of the tests set forth in subsection (b) of this
     section 4.3 may be met for such Plan Year, then:

     (i)    The Committee shall have the unilateral right during the Plan Year
            to require the prospective reduction, for the balance of such Year
            or any part thereof, of the percentage of the Salary of Highly
            Compensated Participants that may be subject to Salary Reduction
            Agreements. Such reductions shall be made to the extent necessary,
            in the discretion of the Committee, to assure that one of the tests
            set forth in subsection (b) of this section 4.3 shall be met for the
            Plan Year and shall be based upon estimates made from data available
            to the Committee at any time during the Plan Year.

     (ii)   Reductions pursuant to subsection (i) above shall be effected with
            respect to Highly Compensated Participants pursuant to the following

                                      -19-

 
          procedure: The Actual Deferral Percentage of the Highly Compensated
          Participant with the highest Actual Deferral Percentage shall be
          reduced to the extent necessary to cause such Highly Compensated
          Participant's Actual Deferral Percentage to equal the Actual Deferral
          Percentage of the Highly Compensated Participant with the next highest
          Actual Deferral Percentage. This process shall be repeated to the
          extent necessary to assure that one of the tests set forth in
          subsection (b) shall not be exceeded for such Plan Year.

(e)  To the extent permitted, the limitations set forth in this section 4.3
     shall be adjusted in connection with contributions made pursuant to section
     4.7.

4.4 Recharacterization and Return of Certain Salary Reduction Contributions

If a Salary Reduction Contribution made by the Company for a Highly Compensated
Participant is reduced for a Plan Year pursuant to Section 4.3(c), the amount so
reduced shall be allocated and distributed, at any time prior to the close of
the following Plan Year, as follows:

(a)  To the extent permitted by regulations issued by the Secretary of the
     Treasury and as elected by the Highly Compensated Participant, if the
     Participant has not made deposits to his or her After-Tax Deposit Account
     equal to the maximum amount permitted under the Plan, the amount reduced
     pursuant to section 4.3(c), adjusted for earnings, gains and losses
     allocable thereto for the Plan Year, shall be deemed to be after-tax
     deposits made by the Participant and shall (within the limits contained in
     the Plan) be allocated to the Participant's After-Tax Deposit Account; or

(b)  To the extent that the procedure set forth in subsection (a) of this
     Section is not elected by the Highly Compensated Participant, or if the
     Highly Compensated Participant makes or is deemed to have made deposits to
     his or her After-Tax Deposit Account equal to the maximum amount permitted
     by the Plan (through Salary Reduction Contributions made pursuant to
     Article IV of the Plan, pursuant to the operation of subsection (a), or
     both), any portion of the amount so reduced pursuant to Section 4.3(c) that
     is not allocated to the Participant's After-Tax Deposit Account pursuant to
     subsection (a) of this Section 4.4, adjusted for earnings, gains and losses
     allocable thereto for the Plan Year, pursuant to Section 401(k)(8) of the
     Code, shall be paid directly to the applicable Highly Compensated
     Participant.

4.5 Treatment of Associated Matching Contribution

                                      -20-

 
Any Matching Contribution that is associated with a Salary Reduction
Contribution made by the Company for a Highly Compensated Participant that is
reduced for a Plan Year pursuant to Section 4.3(c), shall continue to be treated
as a Matching Contribution, subject to Section 5.5.

4.6 Supplemental Company Contributions

The Company may contribute to the Thrift Trust with respect to any Plan Year a
Supplemental Company Contribution in such amount as the Committee may determine.
Supplemental Company Contributions may be made to the Before-Tax Deposit
Accounts of Participants who are not Highly Compensated Participants only if,
and to the extent that, such Contributions are necessary to satisfy one of the
tests contained in section 4.3(b) of the Plan.  The Supplemental Company
Contribution for any Plan Year shall be allocated to the Before-Tax Deposit
Accounts of Participants who are not Highly Compensated Participants in the
manner in which the Company shall determine in its sole discretion.  Upon
allocation to the Before-Tax Deposit Accounts of such Participants, the
Supplemental Company Contribution shall be considered as Salary Reduction
Contributions for all purposes of the Plan other than for purposes of sections
8.7 and 8.8 of the Plan and for purposes of determining the amount of Matching
Contributions made on such Participant's behalf pursuant to section 4.4, and
shall be subject to all of the provisions of the Plan regarding Salary Reduction
Contributions.  The Company shall pay to the Thrift Trust its Supplemental
Company Contribution with respect to a particular Plan Year within 90 days after
the end of such Plan Year.

4.7 Uniformed Services Employment and Reemployment Rights Act

This Plan shall be administered consistent with the provisions of Uniformed
Services Employment and Reemployment Rights Act of 1994, P.L. 103-353
("USERRA").  As such, (i) an Eligible Employee who has returned to work within
the period required under USERRA after he or she is released from military
service with the armed forces of the United States, shall be permitted to make
Salary Reduction Contributions to the extent required to comply with USERRA and
other applicable laws and (ii) the Company shall make contributions to the
extent necessary to comply with such law.

                                      -21-

 
Article V. Company Contributions

5.1 Company Matching Contribution

If an Employee is a Participant in the Plan during any part of a calendar year
and, on December 31 of that calendar year, is either--

(a)  in the service of the Company or receiving Salary or on leave of absence,
     paid or unpaid, or

(b)  not in the service of the Company, but the Employee terminated his or her
     service with the Company during the calendar year by reason of Permanent
     Disability, death, normal or early retirement under the Pension Plan, any
     other retirement after his or her Normal Retirement Date, or under
     circumstances which he or she is a Severance Eligible Participant,

then the Employee is eligible to have the Company make a Matching Contribution
to the Employee's Matching Contribution Account for that calendar year. Subject
to the provisions of sections 5.2, 5.4, and 5.5, the amount of the Matching
Contribution for a calendar year shall be the applicable percentage of the
maximum possible contribution, determined in accordance with the following two
tables:

Table One
Maximum Possible Matching Contribution
==================================================
                          MAXIMUM POSSIBLE PERCENT
MATCHABLE PARTICIPANT     OF SALARY FOR CALENDAR
DEPOSITS FOR              YEAR WHICH MAY BE
CALENDAR YEAR             CONTRIBUTED BY COMPANY
- --------------------------------------------------
1%                        1.25%
2%                        2.50%
3%                        3.75%
4%                        5.0%
- --------------------------------------------------

"Matchable participant deposits" means the aggregate contributions deposited by
a Participant to his or her After-Tax Deposit Account and Before-Tax Deposit
Account during the calendar year which are matchable by the Company. Matchable
participant deposits may include amounts contributed under section 4.7.  The
matchable participant deposits are calculated based on the percent of Salary
deposited for each pay period in the calendar year.  Matchable participant
deposits that exceed 4 percent in any pay period are disregarded for this
purpose; provided, however, that amounts in excess of 4 percent may be
considered to the extent necessary to comply with section 4.7.  The sum of these
amounts is the aggregate matchable participant deposit for the calendar year.

                                      -22-

 
The applicable percentage of the maximum possible contribution for a calendar
year shall be determined by how close Northern Trust Corporation comes to
attaining the earnings goal for the Corporation for the calendar year.  The
earnings goal for the calendar year shall be announced by the Company's Board of
Directors in the first quarter of the calendar year.  The Corporation's earnings
for the calendar year for purposes of the Company's Matching Contribution shall
be determined by the Company's Board of Directors in its discretion, taking into
consideration such factors and circumstances and including or excluding such
items of income and expense as it deems appropriate, and shall be announced to
Participants in the first quarter of the following year.  After the end of the
calendar year--

(1)  the Corporation's earnings for the calendar year shall be expressed as a
     percentage of the earnings goal for the year, and

(2)  the Company shall make a Matching Contribution to the Matching Contribution
     Account of a Participant or Former Participant eligible in accordance with
     the following Table Two:

                                      -23-

 
Table Two
Applicable Percentage of
Maximum Possible Contribution
==================================================
                    APPLICABLE PERCENTAGE OF
                    MAXIMUM POSSIBLE CONTRIBUTION
PERCENTAGE OF       (PERCENTAGE OF TABLE ONE
EARNINGS GOAL       MAXIMUM POSSIBLE
ATTAINED BY         CONTRIBUTION WHICH COMPANY
CORPORATION         WILL CONTRIBUTE TO
(EARNINGS/          PARTICIPANT'S
EARNINGS GOAL)      MATCHING CONTRIBUTION ACCOUNT)
- --------------------------------------------------
100% or more        100%
99%                 99%
98%                 98%
97%                 97%
96%                 96%
95%                 95%

94%                 93%
93%                 91%
92%                 89%
91%                 87%
90%                 85%

89%                 82%
88%                 79%
87%                 76%
86%                 73%
85%                 70%

84%                 66%
83%                 62%
82%                 58%
81%                 54%
80%                 50%

79%                 45%
78%                 40%
77%                 35%
76%                 30%
75%                 25%

below 75.0000%      None (0%)
- -------------------------------------------------


The percentage of earnings goal includes not only whole percentages but also
fractions thereof, which shall be considered by extrapolation in determining the
applicable percentage of the maximum possible Company contribution.

                                      -24-

 
5.2 Limitations on Deposits and Contributions

(a)  Notwithstanding anything contained herein to the contrary, but subject to
     section 4.7, a Participant's Annual Additions for a Limitation Year shall
     not exceed the lesser of--

     (1)  $30,000, adjusted for increases in the cost of living as provided in
          Code section 415(d), or

     (2)  25 percent of the Participant's compensation (as defined in paragraph
          (f)(3) below).

(b)  If any Participant under the Plan is also a Participant in a defined
     benefit plan (as defined in section 415(k) of the Code) maintained by the
     Company or an Affiliate, the sum of the defined benefit plan fraction (as
     defined in section 5.2(f)(2)) and the defined contribution plan fraction
     (as defined in section 5.2(f)(1)) for any Limitation Year with respect to
     such Participant shall not exceed one. If a Participant is otherwise
     entitled to receive an allocation under this Plan and accrue a benefit
     under a defined benefit plan maintained by the Company or an Affiliate, and
     the combination thereof would cause the limitations of this section to be
     exceeded, the allocation under this Plan will only be reduced if the
     accrual under such defined benefit plan is not decreased as necessary to
     cause such limitations not to be exceeded.

(c)  To the extent a Participant's Annual Additions for a Limitation Year exceed
     the limitations in either paragraph (a)(1) or (a)(2), the Participant's
     deposits shall be returned to the Participant in the following order:

     (1)  the Participant's deposits to his or her After-Tax Deposit Account;
          then

     (2)  the Participant's deposits to his or her Before-Tax Deposit Account.

After giving effect to the foregoing sentence, if appropriate, the Company shall
make no contribution to the Participant's Matching Contribution Account which
would result in those limitations being exceeded.  If any excess Annual
Additions nonetheless remain in the Participant's Accounts, such excess amounts
shall be subtracted from his or her Matching Contribution Account.  The
subtracted amount shall be used to reduce Company contributions as provided in
section 5.4.

                                      -25-

 
(d)  If a Participant is entitled to receive an allocation under this Plan and
     any Related Plan and, in the absence of the limitations contained in this
     section, the Company would contribute or allocate to the Accounts of that
     Participant an amount for a Limitation Year that would cause the Annual
     Additions to the Accounts of the Participant to exceed the annual Maximum
     Permissible Amount for such Year, then the contributions and allocations
     made with respect to the Participant under this Plan will be reduced before
     the contributions or allocations to the Participant's accounts under the
     Related Plan are reduced.

(e)  In applying the limitations under this section 5.2, all Affiliates shall,
     together with the Company, be considered as a single employer.  In
     addition, in applying these limitations, all defined contribution plans
     (whether or not terminated) of the Company shall be treated as one defined
     contribution plan, and all defined benefit plans (whether or not
     terminated) of the Company shall be treated as one defined benefit plan.

(f)  For purposes of this section 5.2--

     (1)  The "defined contribution plan fraction" for any Limitation Year for
          a Participant means a fraction, the numerator of which is the sum of
          the Participant's Annual Additions for the Limitation Year and all
          prior Limitation Years, and the denominator of which is the sum of the
          lesser of the following amounts (determined for the Limitation Year
          and for each prior Limitation Year of service with the Company): (1)
          the product of 1.25 multiplied by the dollar limitation in effect
          under Code section 415(c)(1)(A) for such Limitation Year or (2) the
          product of 1.4 multiplied by 25 percent of the Participant's
          compensation for such Limitation Year.

     (2)  The "defined benefit plan fraction" for any Limitation Year for a
          Participant means a fraction, the numerator of which is the
          Participant's projected annual benefit (determined as of the close of
          the Limitation Year), and the denominator of which is the lesser of
          (A) the product of 1.25 multiplied by the maximum dollar limitation
          under Code section 415(b)(1)(A) for that year or (B) the product of
          1.4 multiplied by 100 percent of the Participant's average
          compensation for his or her high three years. However, the denominator
          of the fraction shall not be less than 1.25 multiplied by the annual
          benefit which the Participant had accrued under the Pension Plan as of
          September 30, 1983.

                                      -26-

 
     (3)  The term "compensation" shall mean wages, salaries, fees for
          professional services, and other amounts received for personal
          services actually rendered in the course of employment with the
          Company or an Affiliate (including, but not limited to, commissions
          paid salesmen, compensation for services on the basis of a percentage
          of profits, tips, and bonuses); shall include all compensation
          actually paid or made available to a Participant for an entire
          Limitation Year; and shall not include any other items or amounts paid
          to or for the benefit of a Participant.

(g)  For any Limitation Year in which the Plan is a top-heavy plan, the
     determination of the defined benefit fraction and the defined contribution 
     fraction under this section 5.2 will be adjusted in accordance with the 
     provisions of section 416(h) of the Code.

(h)  To the extent permitted, the limitations set forth in this section 5.2 
     shall be adjusted in connection with contributions made pursuant to
     section 4.7.

5.3 Time of Matching Contributions

The Company's Matching Contribution for a calendar year on behalf of a
Participant shall be made as soon as practicable after the end of the calendar
year, without interest, but otherwise shall be deemed to have been made as of
December 31 of the calendar year if it is made not later than the time
prescribed by law (with extensions) for the filing of the Company's federal
income tax return for that year. All contributions shall be transmitted to the
Trustee for investment as the Participant shall have directed as provided in
section 6.3.

5.4 Forfeitures

Forfeitures occurring other than as of the last day of the Plan Year under
section 8.3 shall be held in a suspense account in the Plan and invested in the
Short Term Fund.  Notwithstanding the provisions of section 5.1, Forfeitures,
and (where applicable) earnings thereon, shall be used to satisfy the Matching
Contribution, and the Company's contribution under section 5.1 shall be reduced
(but not below zero) accordingly.

5.5 Limitations on Contributions

The amount of contributions made by any corporation which is a party to this
Plan shall not exceed the amount deemed to be deductible in computing the
taxable income of such corporation (taking into account all contributions under
the Pension Plan and all privileges and limitations of carry over and carry
forward as established by law) for the purpose of computing taxes on, or

                                      -27-

 
measured by, income under the provisions of the Code or any other laws in effect
from time to time.

5.6 Rules Governing Matching Contributions

(a)  Notwithstanding any provisions of the Plan to the contrary, but subject to
     section 4.7, the Actual Contribution Percentage of Highly Compensated
     Participants shall bear to the Actual Contribution Percentage for all other
     Participants a relationship that satisfies either of the following tests:

     (i)  The Actual Contribution Percentage for Highly Compensated Participants
          is not more than the Actual Contribution Percentage for all other
          Participants multiplied by 1.25; or

     (ii) The Actual Contribution Percentage for Highly Compensated Participants
          is not more than the Actual Contribution Percentage for all other
          Participants multiplied by two and the excess of the Actual
          Contribution Percentage for the group of Highly Compensated
          Participants over that of all other Participants is not more than two
          percentage points.

(b)  If, at the end of any Plan Year, neither of the tests set forth in
     subsection (a) is satisfied for such Year, then the Matching Contributions
     made for such Year on behalf of Highly Compensated Participants shall be
     reduced in the manner set forth in this subsection (b) to the extent
     necessary to comply with one of the tests set forth in subsection (a).
     Reductions pursuant to the preceding sentence shall be effected with
     respect to Highly Compensated Participants pursuant to the following
     procedure: The Actual Contribution Percentage of the Highly Compensated
     Participant with the highest Actual Contribution Percentage shall be
     reduced to the extent necessary to cause such Highly Compensated
     Participant's Actual Contribution Percentage to equal the Actual
     Contribution Percentage of the Highly Compensated Participant with the next
     highest Actual Contribution Percentage. This process shall be repeated
     until the Plan satisfies one of the tests set forth in subsection (a) for
     such Plan Year.

(c)  Deposits by Participants who are not Highly Compensated Participants to the
     After-Tax Deposit Account and Matching Contributions made on account of
     Participants who are not Highly Compensated Participants shall be valid and
     shall not be affected by this section. The unvested portion of Matching
     Contributions that are reduced pursuant to the preceding provisions of this
     section for the Plan Year, adjusted for earnings, gains and losses
     allocable thereto pursuant to Section 401(m) of the Code for such Plan
     Year, shall be returned to the Company and the reduced after-tax


                                      -28-

 
     deposits and the vested portion of such reduced Matching Contributions,
     adjusted for earnings, gains and losses allocable thereto shall be paid
     directly to the applicable Participant. After-tax deposits shall be reduced
     first, and, to the extent necessary, vested Matching Contributions shall be
     reduced thereafter. If the vested portion of the Matching Contribution
     Account of the Participant is not sufficient to satisfy the necessary
     reduction the nonvested portion of such Matching Contribution Account shall
     be forfeited to the extent necessary to satisfy such reduction. The
     calculations, reductions, allocations and payments required by this section
     shall be made by the Committee with respect to a Plan Year at any time
     prior to the close of the following Plan Year.

(d)  If at any time during a Plan Year the Committee, in its sole discretion,
     determines that neither of the tests set forth in subsection (a) of this
     Section 5.6 may be met for such Plan Year, then:

     (i)  The Committee shall have the unilateral right during the Plan Year to
          require the prospective reduction, for the balance of the Year, or any
          part thereof, of the percentage of Salary of Highly Compensated
          Participants that may be deposited on an after-tax basis. Such
          reductions shall be made to the extent necessary, in the discretion of
          the Committee, to assure that one of the tests set forth in subsection
          (a) of this section 5.6 shall be met for the Plan Year and shall be
          based upon estimates made from data available to the Committee at any
          time during the Plan Year.

     (ii) Reductions pursuant to (i) above shall be effected with respect to
          Highly Compensated Participants pursuant to the following procedure:
          The Actual Contribution Percentage of the Highly Compensated
          Participant with the highest Actual Contribution Percentage shall be
          reduced to the extent necessary to cause such Highly Compensated
          Participant's Actual Contribution Percentage to equal the Actual
          Contribution Percentage of the Highly Compensated Participant with the
          next highest Actual Contribution Percentage. This process shall be
          repeated to the extent necessary to assure that one of the tests set
          forth in subsection (a) shall not be exceeded for such Plan Year.

(e)  If one or more Highly Compensated Participants is eligible to authorize
     Salary Reduction Contributions to be made on his or her behalf, and to have
     Matching Contributions allocated to his Accounts pursuant to the Plan
     during such Plan Year and the sum of the Actual Deferral Percentage of the
     entire group of Highly Compensated Participants and of the Actual

                                      -29-

 
     Contribution Percentage of the entire group of Highly Compensated
     Participants for such Plan Year exceeds the Aggregate Limit, then the
     Actual Contribution Percentage of those Highly Compensated Participants
     will be reduced (beginning with such Highly Compensated Participant whose
     Actual Contribution Percentage is the highest) so that the limit is not
     exceeded.  The Actual Deferral Percentage and the Actual Contribution
     Percentage of the Highly Compensated Participants are determined after any
     corrections required to meet the Actual Deferral Percentage and Actual
     Contribution Percentage tests.  This subsection (e) shall not apply if
     either the Actual Deferral Percentage or the Actual Contribution Percentage
     of the Highly Compensated Participants does not exceed 1.25 multiplied by
     the Actual Deferral Percentage and Actual Contribution Percentage of the
     non-Highly Compensated Participants.

(f)  To the extent permitted, the limitations set forth in this section 5.6
     shall be adjusted in connection with contributions made pursuant to section
     4.7.

5.7 Transfers from ESOP

To enable The Northern Trust Employee Stock Ownership Plan to satisfy the
investment diversification requirement of Code section 401(a)(28)(B), the Plan
shall accept transfers of cash directly from an Employee's account in the
Northern Trust Employee Stock Ownership Plan which are made to fulfill that
requirement. The transferred property shall be added to the Employee's ESOP
Contribution Account. The Committee shall regulate the making of transfers in
accordance with uniform and nondiscriminatory rules.

                                      -30-

 
Article VI. Investment Funds

6.1 Investment Funds

There shall be the following six Investment Funds:

(a)  SHORT TERM FUND. This Fund invests primarily in debt instruments with short
     maturity dates (e.g., money market instruments). This Fund shall be
     invested with the objective of minimizing fluctuations in the market value
     of the Fund, while obtaining maximum income consistent with that objective.

(b)  BENCHMARK FUNDS--BOND PORTFOLIO. This Fund invests primarily in debt
     instruments with longer maturity dates (e.g., bonds).

(c)  BENCHMARK FUNDS--BALANCED PORTFOLIO. This Fund invests in stocks, bonds,
     and money market instruments. The mix of these investments is regularly
     monitored and adjusted.

(d)  BENCHMARK FUNDS--EQUITY INDEX PORTFOLIO. This Fund invests primarily in
     common stocks. The Fund seeks to achieve investment performance results
     paralleling the results of the Standard & Poor's 500 Stock Index. The
     Fund's investments are not actively managed.

(e)  BENCHMARK FUNDS--FOCUSED GROWTH PORTFOLIO. This Fund invests primarily in
     stocks of companies with high growth potential.

(f)  NORTHERN TRUST STOCK FUND. This Fund shall be invested primarily in shares
     of common stock of Northern Trust Corporation.

The Benchmark Fund is a registered investment company. The Northern Trust
Company is the investment adviser, transfer agent, and custodian for each
portfolio of the Fund, and it receives from each portfolio a fee for its
services.

The Committee may select other investment funds, in addition to or in lieu of,
the foregoing Funds. Such other funds shall be included within the terms "Funds"
or "Investment Funds" hereunder as if specified above.

6.2 Administration of Funds

Each of the Investment Funds shall be invested without distinction between
principal and income. Pending payment of costs, expenses and anticipated
benefits, or acquisition of permanent investments, the Trustee may hold any
portion of any of the Investment Funds in money market instruments (or in a
collective investment fund or registered investment company composed
                                     

                                     -31-

 
primarily of such investments). Prior to March 14, 1995, the Committee may
allocate the aggregate deposits and contributions on behalf of all Participants
among the Investment Funds on an estimated basis during a Valuation Period and
make compensating adjustments among the Funds, if needed, as of the end of the
Valuation Period in order to facilitate administration of the Plan.

6.3 Selection of Investment Funds

Each Member shall have the right to direct that--

(a)  the contributions to the After-Tax Deposit Account and Before-Tax Deposit
     Account shall be invested in specified multiples of 1 percent in any one or
     more of the Investment Funds (but not in The Northern Trust Stock Fund),
     with the same election applying to deposits to both Accounts,

(b)  the contributions to the Member's Rollover Deposit Account shall be
     invested in specified multiples of 1 percent in any one or more of the
     Investment Funds (but not in The Northern Trust Stock Fund),

(c)  the contributions to the Member's Basic Contribution Account and Matching
     Contribution Account shall be invested in specified multiples of 1 percent
     in any one or more of the Investment Funds,

(d)  the contributions to the Member's ESOP Contribution Account shall be
     invested in specified multiples of 1 percent in any one or more of the
     Investment Funds (but not in The Northern Trust Stock Fund), and

(e)  the contributions to the Member's Acquired Company Prior Plan Account shall
     be invested in specified multiples of 1 percent in any one or more of the
     Investment Funds (provided that, if such Account is not wholly attributable
     to contributions of an employer, within the contemplation of Section
     3(a)(2) of the Securities Act of 1933, no investment may be made in The
     Northern Trust Stock Fund).

Directions shall be in such written, electronic, or other form as the Committee
shall determine, and shall be made on or before any reasonable and
nondiscriminatory deadline that the Committee establishes.

6.4 Transfers Between Funds

Subject to restrictions set forth below, each Member shall have the right to
direct that--

(a)  his or her After-Tax Deposit Account, Before-Tax Deposit Account, ESOP
     Contribution Account and Rollover Deposit Account which are invested in 

                                      -32-

 
     any one or more of the Investment Funds, shall be transferred in whole or
     in part to any one or more of the Investment Funds (but not The Northern
     Trust Stock Fund), with the same election applying to transfers in all four
     Accounts, and

(b)  his or her Basic Contribution Account, Matching Contribution Account and
     Acquired Company Prior Plan Account (subject to the proviso contained in
     subsection (e) of section 6.3) which are invested in any one or more of the
     Investment Funds, shall be transferred in whole or in part to any one or
     more of the Investment Funds, with the same election applying to transfers
     in all three Accounts;

provided, however that before March 14, 1995, a Participant who has terminated
employment with the Company or any Affiliate shall not have the right to direct
the investment of his or her Accounts after the date the Participant's
employment terminates.  Such Participant's Account balances will be transferred
to the Short Term Fund as of the first Valuation Date after the Participant
terminates employment.

Any investment direction must be received by the Committee on or before any
reasonable and nondiscriminatory deadline that it establishes.  Directions shall
be in such written, electronic, or other form as the Committee shall determine.
Through June 30, 1993, transfers may be made effective as of the first day of
any calendar quarter.  Effective July 1, 1993 through March 1, 1995, transfers
may be made as of the first day of any month, up to six times in a calendar
year; provided, however, that no transfers shall be accepted during February
1995. Effective March 14, 1995, transfers may be made effective as of any
business day.

In addition to other limitations set forth above, the Committee will not accept
instructions to transfer funds to or from The Northern Trust Stock Fund under
this Plan during the period beginning on the 10th business day prior to the end
of a calendar quarter and ending on the third business day following the release
of quarterly or annual financial information with respect to such quarter.

Further, the Committee in its discretion may at any time and from time to time
regulate, limit, or prohibit Members from making transfers to or from (or
investing in, or withdrawing or borrowing from) The Northern Trust Stock Fund
under this Plan, in order to ensure that federal securities laws will not be
violated currently or in the future.


6.5 Voting Rights; Tender Offers

                                      -33-

 
(a)  Each Member having an interest in The Northern Trust Stock Fund shall have
     the right to direct the manner in which the Trustee shall vote common stock
     of Northern Trust Corporation ("Company Stock") in such Fund equivalent to
     his or her proportionate interest therein.

(b)  In the event of a Tender Offer for Company Stock, each Member having an
     interest in The Northern Trust Stock Fund shall have the right to direct
     whether the Trustee will (1) tender Company Stock in such Fund equivalent
     to his or her Proportionate Interest therein and (2) withdraw such Stock
     from the depository into which it is tendered pursuant to such direction.

(c)  Subject to sections 14.6, 14.7, and 14.8 of the Plan and Part 4 of Title I
     of ERISA, the Trustee shall vote, tender, or withdraw from the depository
     into which tendered, Company Stock in The Northern Trust Stock Fund only in
     accordance with directions received from Members within the time periods
     set forth below and shall not vote, tender, or so withdraw Company Stock in
     The Northern Trust Stock Fund equivalent to the Proportionate Interest of
     Participants from whom timely directions are not received by the Trustee
     pursuant to this section.

(d)  As soon as possible prior to each stockholders meeting of Northern Trust
     Corporation, the Trustee shall provide each Member entitled under this
     section to direct the voting of Company Stock with notice of such meeting
     and of those matters which at the time of the mailing of such notice are
     expected to be presented at such meeting for action by holders of Company
     Stock.  Such notice shall be accompanied by an appropriate form with which
     the Member may direct the manner of voting on such matters. If directions
     on such matters are received by the Trustee from any such Member at least
     two days prior to such meeting, the Trustee shall vote such Member's
     Proportionate Interest in accordance with the directions received from such
     Member.

(e)  If any person makes a Tender Offer for shares of Company Stock which
     includes shares of Company Stock held in The Northern Trust Stock Fund, the
     Trustee shall promptly notify each Member having an interest in The
     Northern Trust Stock Fund: (1) that a Tender Offer for shares of Company
     Stock has been commenced, (2) of the identity of the tender offeror, (3) of
     such other information as the Trustee deems appropriate to enable the
     Member to make an independent decision with respect to the tendering of
     such Stock, (4) that the Member has the right to direct whether his
     Proportionate Interest will be tendered, and (5) that Company Stock
     constituting the Member's Proportionate Interest will not be 

                                      -34-

 
     tendered except to the extent that a direction to tender has been received
     by the Trustee from such Member no later than the date two days before the
     deadline for tenders under such Tender Offer. Such notice will be
     accompanied by an appropriate form with which the Member may direct the
     Trustee whether to tender his or her Proportionate Interest. If such
     written direction is received by the Trustee prior to such date, the
     Trustee shall tender, or not tender, such Member's Proportionate Interest
     in accordance with such directions. A Member's direction to tender or not
     tender shall become irrevocable on the date two days before such deadline
     for tenders and may be revoked by a subsequent direction received by the
     Trustee from such Member on or before such date. After shares of Company
     Stock have been tendered pursuant to this section, the proceeds of the
     Trust's sale of such Company Stock pursuant to the Tender Offer
     attributable to each Member who directed the tender of his Proportionate
     Interest shall be separately accounted for in The Northern Trust Stock
     Fund. As soon as practicable after consummation of the sale of such Stock
     thereunder, the directing Member's interest in The Northern Trust Stock
     Fund will be debited with the proceeds of such sale, and as of the end of
     the Valuation Period that interest shall be transferred to the Short Term
     Fund.

(f)  If shares of Company Stock have been tendered in a Tender Offer by the
     Trustee pursuant to the direction of a Member, and if withdrawal rights
     arise pursuant to (1) the terms of such Tender Offer, (2) any statute or
     regulation promulgated thereunder, or (3) a court order, the Trustee shall
     promptly notify any Member who made such a direction that he has the right
     to direct the withdrawal of the shares of Company Stock tendered pursuant
     to his or her direction from the depository into which such shares have
     been tendered.  The Trustee will provide such Member with an appropriate
     form with which he may direct the Trustee to withdraw such shares.  In the
     event the Trustee receives any such written direction within sufficient
     time to act, it shall withdraw such shares of Company Stock.

(g)  DEFINITIONS.

     (1)  The "Proportionate Interest" of a Member is the number of shares of
          Company Stock determined by multiplying the total number of shares of
          Company Stock held in The Northern Trust Stock Fund by a fraction, the
          numerator of which is the Member's interest in The Northern Trust
          Stock Fund and the denominator of which is the entire balance of The
          Northern Trust Stock Fund. All determinations made pursuant to the
          preceding sentence shall be as of the first day of the Valuation
          Period which Period includes (A) in the

                                      -35-

 
          case of the voting of Company Stock, the record date for the
          applicable meeting and (B) in the case of a Tender Offer for Company
          Stock, the date on which the Tender Offer was announced.

     (2)  A "Tender Offer" is a tender offer for, or a request for or invitation
          for tenders of, stock within the meaning of section 14(d) of the
          Securities Exchange Act of 1934 and applicable rules, regulations, and
          case law thereunder.

6.6 Individual Accounts

The Committee will maintain or cause to be maintained individual accounts of the
interests of Participants in the several Investment Funds, showing separately
interests resulting from the deposits of Members and from contributions made by
the Company on their behalf.  Each Investment Fund may be invested as a single
fund, however, without segregation of Fund assets to the individual Accounts of
Members.

                                      -36-

 
Article VII. Valuation and Adjustments

7.1  Valuation and Adjustments

As of each Valuation Date, the value of each Account shall be determined in the
following manner:

(a)  As soon as practicable after each Valuation Date, the fair market value of
     the assets of each of the Investment Funds, net of fees chargeable, shall
     be determined as of the Valuation Date (or, before March 14, 1995, as of
     the next previous business day if the Valuation Date falls on a Saturday,
     Sunday, or holiday).

(b)  Each Account in an Investment Fund shall be adjusted by multiplying it by a
     fraction, the numerator of which is the fair market value of such Fund as
     of the Valuation Date, and the denominator of which is the sum of (1) the
     adjusted value of the Fund on the last Valuation Date determined as
     provided in subsection (d) and (2) the aggregate amount of all Members'
     deposits and loan payments and Company contributions during the Valuation
     Period beginning after the last Valuation Date.

(c)  Following the adjustment of each Account in an Investment Fund pursuant to
     subsection (b), the benefits and withdrawals distributable, loans granted,
     and amounts transferable from the Fund as of the Valuation Date shall be
     paid to the Members and Beneficiaries entitled thereto, and such amounts
     transferable to other Investment Funds shall be deposited in such Funds.

(d)  The amount of benefits and withdrawals distributed, loans disbursed, and
     amounts transferred from each Investment Fund as of the Valuation Date
     shall be deducted from, and the amount of transfers to such Fund as of the
     Valuation Date shall be added to, the fair market value of such Fund as of
     the Valuation Date, and the resulting figure shall be recorded as the
     adjusted value of such Investment Fund on the Valuation Date.

                                      -37-

 
Article VIII. Benefits

8.1 Normal Retirement Date, Pension, Permanent Disability

Each Member whose participation in the Plan terminates by reason of termination
of service with the Company--

(a)  for any reason after the Member attains his or her Normal Retirement Date,

(b)  after the Member has qualified for an Early Retirement Pension under the
     Pension Plan, or

(c)  by reason of Permanent Disability,

shall be entitled to receive a 100% vested benefit equal to the value of the sum
of his or her After-Tax Deposit Account, Before-Tax Deposit Account, Rollover
Deposit Account, ESOP Contribution Account, Basic Contribution Account, Company
Matching Contribution Account and Acquired Company Prior Plan Account, adjusted
as provided in section 7.1 (and reduced by any security interest held by the
Plan by reason of a loan outstanding to the Member unless such loan is repaid
pursuant to Section 8.9(e)) as of the Valuation Date coincident with or next
following the date his or her participation terminates as provided in section
3.2, and also any Matching Contribution for the calendar year in which his or
her participation terminates as provided in section 5.3.

8.2 Death

If a Member dies, his or her Beneficiary shall be entitled to receive a 100%
vested benefit equal to the value of the sum of the deceased Member's After-Tax
Deposit Account, Before-Tax Deposit Account, Rollover Deposit Account, ESOP
Contribution Account, Basic Contribution Account, Matching Contribution Account,
and Acquired Company Prior Plan Account (and reduced by any security interest
held by the Plan by reason of a loan outstanding to the Member unless such loan
is repaid pursuant to Section 8.9(e)) as of the Valuation Date upon which his or
her participation terminates as provided in section 3.2, and also any Matching
Contribution for the calendar year in which his or her participation terminates
as provided in section 5.3.

The Member may designate a different Beneficiary or Beneficiaries for all or a
specific portion of the Member's Accounts.  If the Member is married and
designates someone other than his or her Spouse as Beneficiary, the Members'
Spouse must consent to such designation, prior to the Member's death, in
writing. Such consent must acknowledge the effect of such an election, the
identity of the Beneficiary, including any class of Beneficiaries and
contingent

                                      -38-

 
Beneficiaries, and the consent must be witnessed by a Plan representative or
a notary public.  The Member may not subsequently change the method as of
distribution elected by the Member or the designation of his Beneficiary
unless his Spouse consents to the new election or designation in accordance
with the requirements set forth in the preceding sentence.  Any such consent
shall only be effective with respect to the specific Spouse.  A surviving
Spouse's consent shall be irrevocable.  If a married Member dies, and there is
a Beneficiary designation as to which the Member's surviving Spouse has not
consented as provided above, then the distribution under this section 8.2
shall be made to the Member's surviving Spouse in a lump sum.

Notwithstanding the foregoing, the consent of a Member's surviving Spouse shall
not be required if the Member establishes to the satisfaction of the Committee
that consent may not be obtained because there is no surviving Spouse, the
surviving Spouse cannot be located, or because of such other circumstances as
the Secretary of the Treasury may prescribe by regulations.

8.3 Termination of Service

Each Member whose service with the Company terminates for any reason, voluntary
or involuntary, other than those enumerated in sections 8.1 and 8.2, shall be
entitled to receive a benefit equal to the value of the sum of his or her 
After-Tax Deposit Account, Before-Tax Deposit Account, Rollover Deposit Account,
ESOP Contribution Account, Basic Contribution Account, and the Vested Portion
of his or her Matching Contribution Account and Acquired Company Prior Plan
Account (and reduced by any security interest held by the Plan by reason of a
loan outstanding to the Member unless such loan is repaid pursuant to Section
8.9(e)) as of the Valuation Date upon which his or her participation terminates
as provided in section 3.2. The Unvested Portion of the Member's Company
Vesting Contribution Account shall be forfeited and disposed of as provided in
section 5.4. Such Forfeiture shall occur (i) before January 1, 1995, as of the
date on which the Member incurs a Break in Service, and (ii) from and after
January 1, 1995, as of the last day of the Plan Year during which the Member
receives a distribution pursuant to this section 8.3.

8.4 Deemed Cashout

If a Member has no vested interest in his Account balance when his or her
employment with the Company and all Affiliates terminates, such Member will be
treated as having received a Deemed Cashout of the Member's Account balance as
of the last day of the Plan Year in which the Member's employment terminated
and the Member's Account balance will be treated as forfeited on such date.
"Deemed Cashout" means a distribution of zero dollars representing the
Member's entire Account balance.  If the Member is reemployed with the Company
or any Affiliate before such Member has incurred five (5) consecutive 

                                      -39-

 
One-Year Breaks in Service, the amount forfeited will be restored as the
Member's Account balance.

8.5 Restrictions on Mandatory Distributions

If a Member who is under 65 years of age is entitled to receive a benefit under
section 8.1 or 8.3, and if the aggregate value of the Member's Accounts in the
Plan is greater than $3,500, the benefit may not be distributed to the Member
without his or her written consent delivered to the Committee prior to the
Valuation Date upon which his or her participation terminates.  Such written
consent shall be made in a form deemed acceptable by the Committee.

If the Member does not so consent, his or her benefit shall not be distributed
until the Member requests a total distribution, attains 65 years of age, or
dies. During that period of time the Member's benefit shall be treated as are
the Accounts of continuing Members, except that (i) no additions to such
Accounts may be made, (ii) before March 14, 1995, such Accounts must be
invested solely in the Short Term Fund, and (iii) the Member may not exercise
the rights granted under sections 8.7, 8.8, and, except as otherwise provided,
section 8.9 of the Plan.

If a distribution is one to which sections 401(a)(11) and 417 of the Code do
not apply, such distribution may commence less than thirty (30) days after the
notice required under section 1.411(a)-11(c) of the Income Tax Regulations is
given, provided that:

(a)  the Committee clearly informs the Member that the Member has a right to a
     period of at least thirty (30) days after receiving the notice to consider
     the decision of whether to elect a distribution, and

(b)  the Member, after receiving the notice, affirmatively elects a
     distribution.

8.6 Required Distributions

(a)  Notwithstanding the provisions of section 8.5, distribution of each
     Member's Accounts must commence not later than 60 days after the last day
     of the Plan Year in which the last of the following events occurs:

     (1)  the date on which the Member reaches his or her Normal Retirement
          Date;

     (2)  the tenth anniversary of the date on which the Member commenced
          participation in the Plan; or

                                      -40-

 
     (3)  the date on which the Member's employment with the Company and all
          Affiliates terminates.

(b)  Notwithstanding anything to the contrary contained elsewhere in the Plan--

     (1)  A Member's benefits under the Plan will--

          (A)  be distributed to him or her not later than the Required
               Distribution Date (as defined in paragraph (3)), or

          (B)  be distributed commencing not later than the Required
               Distribution Date in accordance with regulations prescribed by
               the Secretary of the Treasury over a period not extending beyond
               the life expectancy of the Member or the life expectancy of the
               Member and the Member's Beneficiary.

     (2)  Payments on death--

          (A)  If the Member dies after distribution has commenced pursuant to
               paragraph (1)(B) but before the Member's entire interest in the
               Plan has been distributed to him, then the remaining portion of
               that interest will be distributed at least as rapidly as under
               the method of distribution being used under paragraph (1)(B) at
               the date of the Member's death.

          (B)  If the Member dies before distribution has commenced pursuant to
               paragraph (1)(B), then, except as provided in paragraphs (2)(C)
               and (2)(D), the Member's entire interest in the Plan will be
               distributed within five years after the Member's death.

          (C)  Notwithstanding the provisions of paragraph (2)(B), if the Member
               dies before distribution has commenced pursuant to paragraph
               (1)(B) and if any portion of the Member's interest in the Plan is
               payable (i) to or for the benefit of a Beneficiary, (ii) in
               accordance with regulations prescribed by the Secretary of the
               Treasury over a period not extending beyond the life expectancy
               of the Beneficiary, and (iii) beginning not later than one year
               after the date of the Member's death or such later date as the
               Secretary of the Treasury may prescribe by regulations, then the
               portion referred to in this paragraph (2)(C) shall be treated as
               distributed on the date on which such distribution begins.

                                      -41-


 
          (D)  Notwithstanding the provisions of paragraphs (2)(B) and (2)(C),
               if the Beneficiary referred to in paragraph (2)(C) is the Spouse
               of the Member, then--

               (i)  the date on which the distributions are required to begin
                    under paragraph (2)(C)(iii) of this section shall not be
                    earlier than the date on which the Member would have
                    attained age 70-1/2, and

               (ii) if the Spouse dies before the distributions to that Spouse
                    begin, then this paragraph (2)(D) shall be applied as if the
                    surviving Spouse were the Member.

     (3)  For purposes of subsection (b)(1), the Required Distribution Date
          means April 1 of the calendar year following the calendar year in
          which the Member attains age 70-1/2; provided, however, that in the
          case of a Member who attained age 70-1/2 before January 1, 1988 such
          Member's Required Distribution Date shall be April 1 following the
          calendar year in which occurs the later of (A) the Member's attainment
          of age seventy and one-half (70-1/2), or (B) the Member's termination
          of employment, unless such Member is a Five-Percent Owner (as defined
          in Section 416(i) of the Code) of the Company at any time during the
          Plan Year ending with or within the calendar year in which such owner
          attains age sixty-six and one-half (66-1/2) or any subsequent year, in
          which case clause (B) shall not apply.

     (4)  For purposes of subsection (b), once distribution has commenced
          hereunder, the life expectancy of a Member and the Member's Spouse may
          not be redetermined.

     (5)  A Member may not elect a form of distribution pursuant to paragraph
          (1) providing payments to a Beneficiary who is other than the Member's
          Spouse unless the actuarial value of the payments expected to be paid
          to the Member is more than 50 percent of the actuarial value of the
          total payments expected to be paid under such form of distribution.

8.7 Withdrawals as of Right

Subject to the limitations hereinafter in this section 8.7 provided, a
Participant shall have the right to make a withdrawal by setting forth the
amount he or she desires to withdraw in a notice to the Committee; provided,
however, that the Committee shall not accept withdrawal notices during
February 1995. Amounts withdrawn shall be paid to the Participant as soon as
reasonably practicable after
                                      -42-

 
the Valuation Date, without interest.  To make a withdrawal, the Participant 
must be in the service of the Company or an Affiliate when the withdrawal is 
made.  The withdrawal election shall be in such written, electronic, or other 
form as the Committee shall determine.

(a)  WITHDRAWALS OVER AGE 59-1/2.  A Participant who is 59-1/2 years of age or
     older as of a Valuation Date shall be entitled to withdraw as of right any
     part or all of the vested amounts in his or her Plan Accounts listed below,
     in the order designated:

     (1)  After-Tax Deposit Account,                                
                                                                    
     (2)  Rollover Deposit Account,                                 
                                                                    
     (3)  ESOP Contribution Account,                                
                                                                    
     (4)  Vested Portion of Matching Contribution Account,          
                                                                    
     (5)  Vested Portion of Acquired Company Prior Plan Account,   
                                                                    
     (6)  Basic Contribution Account, and                          
                                                                    
     (7)  Before-Tax Deposit Account.                                
 
(b)  WITHDRAWALS UNDER AGE 59-1/2.  A Participant who is under 59-1/2 years of
     age as of a Valuation Date may make withdrawals from his or her Plan
     Accounts as follows:

     (1)  A Participant shall be entitled to withdraw as of right from his or
          her After-Tax Deposit Account an amount equal to the value of his or
          her After-Tax Deposit Account on such Valuation Date, reduced by the
          aggregate amount of the Participant's deposits to that Account which
          were made during the last 24 months ending on such Valuation Date and
          which were or could be the basis for determining Company contributions
          to the Participant's Matching Contribution Account. If a Participant
          makes deposits to both his or her After-Tax Deposit Account and 
          Before-Tax Deposit Account in a Valuation Period, the deposits to the
          Before-Tax Deposit Account shall be deemed to be the basis for Company
          contributions before the deposits to the After-Tax Deposit Account are
          so considered.

                                      -43-

 
     (2)  A Participant shall be entitled to withdraw as of right from his or
          her Rollover Deposit Account an amount equal to the value of his or
          her Rollover Deposit Account on such Valuation Date.

     (3)  A Participant shall be entitled to withdraw as of right from his or
          her ESOP Contribution Account an amount equal to the value of his or
          her ESOP Contribution Account on such Valuation Date. In no event
          shall any withdrawal under this section 8.7(b)(3) be attributable to
          contributions made to the ESOP during the 24 months ending on such
          Valuation Date.

     (4)  A Participant shall be entitled to withdraw as of right from his or
          her Matching Contribution Account an amount equal to the value of the
          Vested Portion of his or her Matching Contribution Account as of such
          Valuation Date, adjusted as provided in section 7.1 as of such
          Valuation Date. In no event shall any withdrawal under this section
          8.7(b)(4) reduce the value of the Participant's Matching Contribution
          Account below the amount of the Company's contributions to such
          Account during the 24 months ending on such Valuation Date.

     (5)  A Participant shall be entitled to withdraw as of right from his or
          her Acquired Company Prior Plan Account an amount equal to the Vested
          Portion of the Acquired Company Prior Plan Account as of such
          Valuation Date.

     With respect to Plan Years ending before January 1, 1995, if a Participant
     has a 100% Vested Portion under section 2.1(zz) and has five years of
     participation, sections 8.7(b)(1), 8.7(b)(3) and 8.7(b)(4) shall be 
     administered for that Participant by substituting "12 months" for "24
     months." Effective January 1, 1995, the 24 month restrictions contained in
     sections 8.7(b)(1), 8.7(b)(3) and 8.7(b)(4) shall not apply to a
     Participant who has a 100% Vested Portion under section 2.1(zz); provided
     that the Participant has at least five years of participation in the Plan.

(c)  GENERAL RULES FOR WITHDRAWALS.  No withdrawal shall reduce the value of a
     Participant's Account below zero.  Any amount withdrawn from an Account of
     a Participant shall be charged against the Account's investment in the
     Investment Funds in the order designated:

     (1)  Short Term Fund,

     (2)  Benchmark Fund--Bond Portfolio,

                                      -44-

 
     (3)  Benchmark Fund--Balanced Portfolio,

     (4)  Benchmark Fund--Equity Index Portfolio,

     (5)  Benchmark Fund--Focused Growth Portfolio, and

     (6)  The Northern Trust Stock Fund, subject to the last paragraph of 
          section 6.4.

     The Committee shall determine the place, in the foregoing order, for any
     other Fund established pursuant to section 6.1. Before January 1, 1995, a
     Participant may withdraw from his or her Account up to six times in a
     calendar year. A Participant's directions for withdrawals shall be subject
     to such reasonable and nondiscriminatory deadlines and in such written, 
     electronic or other form as the Committee shall determine. After calendar
     year 1993, the minimum amount which a Participant may withdraw from his or
     her Plan Accounts as of right under section 8.7(a) is $1,000 per
     withdrawal, with the Accounts being valued as of the preceding Valuation
     Date.

8.8  Hardship Withdrawals

Upon proof satisfactory to the Committee of a hardship (as determined under
paragraph (a) below), a Participant shall be permitted to withdraw vested
amounts from his or her Plan Accounts, but only to the extent necessary to
relieve a financial need (as determined under paragraph (b) below). Amounts
withdrawn shall be paid to the Participant as soon as reasonably practicable
after the Valuation Date, without interest. Such withdrawals shall be made from
the following Accounts of a Participant in the order designated:

     (1)  After-Tax Deposit Account,

     (2)  Rollover Deposit Account,

     (3)  ESOP Contribution Account,

     (4)  Vested Portion of Matching Contribution Account,

     (5)  Vested Portion of Acquired Company Prior Plan Account,

     (6)  Before-Tax Deposit Account, except that a Participant may not withdraw
          earnings credited to that Account after December 31, 1988.

                                      -45-

 
(a)  HARDSHIP STANDARD. For purposes of this section 8.7, a hardship shall be
     limited to:

     (1)  medical expenses previously incurred by the Participant or his or her
          Spouse or dependents, as necessary for these persons to obtain medical
          care,

     (2)  purchase (excluding mortgage payments) of a principal single family
          residence of the Participant,

     (3)  payment of tuition and related educational fees for the next 12 months
          of post-secondary education for the Participant or his or her Spouse,
          children, or dependents,

     (4)  the need to prevent the eviction of the Participant from his or her
          principal single family residence or the foreclosure on the mortgage
          of the Participant's principal single family residence,

     (5)  funeral expenses of an immediate family member (i.e., Spouse, child,
          brother, sister or parent) of the Participant on or after January 1,
          1995, or

     (6)  such other financial needs as the Internal Revenue Service may publish
          in documents of general applicability.

(B)  FINANCIAL NEED STANDARD. Withdrawals on account of hardship may not be made
     in excess of the amount required to relieve such financial need or to the
     extent such need may be satisfied from other resources that are reasonably
     available to the Participant. A Participant shall specify, in the notice
     filed with the Committee in connection with the withdrawal, whether the
     rule described in the preceding sentence (the "financial need standard")
     shall be satisfied based on the criteria set forth in subparagraph (1)
     below, or based on the deemed financial need standards set forth in 
     subparagraph (2) below.

     (1)  Facts and circumstances standards. The financial need standard shall
          be satisfied if the Participant files a written representation with
          the Committee (in a form acceptable to the Committee), that the need
          cannot reasonably be relieved--

          (A)  through reimbursement or compensation by insurance or otherwise,

                                      -46-

 
          (B)  by liquidation of the Participant's assets,    
                                                              
          (C)  by cessation of the Participant's deposits under the Plan, or 
                                                                             
          (D)  by other distributions or nontaxable loans from plans maintained
               by the Company or any Affiliate, or by borrowing from commercial
               sources on reasonable commercial terms.
               
          For purposes of this paragraph, the Participant's resources shall be
          deemed to include the assets of the Participant's Spouse and minor
          children that are reasonably available to the Participant.
          Notwithstanding the foregoing, if the Committee has actual knowledge
          that such representation is not true, the financial need standard
          will not be satisfied.
          
     (2)  Deemed financial need standards. The financial need standard will be 
          deemed to be satisfied if all of the following requirements are 
          satisfied:

          (A)  The Participant obtains all distributions, other than hardship 
               distributions, and all nontaxable loans currently available under
               the Plan and all other plans maintained by the Company;
              
          (B)  The Plan and all other plans maintained by the Company or any
               Affiliate limit the Participant's elective contributions for the
               next taxable year to the applicable limit under section 402(g)
               for that year less the amount of such Participant's elective
               contributions for the taxable year of the hardship distribution;
               and

          (C)  The Participant's elective contributions and employee
               contributions (as defined in IRS Regulation section 1.401(k)) are
               suspended under the Plan and all other deferred compensation
               plans maintained by the Company or any Affiliate for 12 months
               after his receipt of the hardship distribution (except for
               mandatory employee contributions to a defined benefit plan).

          A financial need cannot reasonably be relieved by one of these actions
          if the effect would be to increase the amount of the need. The amount
          of such financial need includes the amounts necessary to pay income
          taxes and penalties reasonably anticipated to result from the
          withdrawal.

                                      -47-

 
(c)  GENERAL RULES FOR HARDSHIP WITHDRAWALS. No withdrawal shall reduce the
     value of a Participant's Account below zero. Any amount withdrawn from an
     Account of a Participant shall be charged against the Account's investment
     in the Investment Funds in the order designated:

     (1)  Short Term Fund,

     (2)  Benchmark Fund--Bond Portfolio,

     (3)  Benchmark Fund--Balanced Portfolio,

     (4)  Benchmark Fund--Equity Index Portfolio,

     (5 ) Benchmark Fund--Focused Growth Portfolio, and

     (6)  The Northern Trust Stock Fund, subject to the last paragraph of
          section 6.4.

     The Committee shall determine the place, in the foregoing order, for any
     other Fund established pursuant to section 6.1. A Participant may withdraw
     from his or her Account no more than once each payroll period. Before
     January 1, 1995, a Participant may withdraw from his or her Account no
     more than three times in a calendar year; provided, however, that the
     Committee shall not accept applications for hardship withdrawals during
     February 1995. A Participant's directions for withdrawals shall be
     subject to such reasonable and nondiscriminatory deadlines and in such
     written, electronic or other form as the Committee shall determine.

     Amounts withdrawn pursuant to this section 8.8 shall be made only after the
     Participant has exhausted his or her withdrawal rights under section 8.7.

8.9 Loans to Participants

(a)  A Participant and, to the extent not inconsistent with Section 401(a) of
     the Code, a former Participant who is a Party in Interest (as defined in
     section 3(14) of ERISA), shall have the right to borrow money from his or
     her Plan Account by submitting a loan application; provided, however, that
     no loan applications will be accepted during February, 1995. Approved loan
     applications will be processed for payment to the Participant as soon as
     reasonably practicable after the applicable Valuation Date. A loan request
     shall be subject to such reasonable and nondiscriminatory deadlines and
     shall be in such written, electronic or other form, as are established by
     the Committee. The amount of the loan shall not exceed the lesser of--

                                      -48-

 
     (1)  if the aggregate value of the Participant's After-Tax Deposit Account,
          Before-Tax Deposit Account, Rollover Deposit Account, ESOP
          Contribution Account, Basic Contribution Account, Acquired Company
          Prior Plan Account and the Vested Portion of his or her Matching
          Contribution Account valued as of the prior Valuation Date is less
          than $100,000, one-half thereof, and

     (2)  if the aggregate value of the Participant's vested Accounts described
          in (1) above is $100,000 or more, $50,000

     except that if the Participant has an outstanding balance of loans from the
     Plan, the amount available for any additional loan shall be reduced by the
     lesser of (A) 50 percent of the Participant's vested Accounts described in
     (1), including the value of any outstanding balance of loans from the Plan,
     minus the value of those loan balances or (B) $50,000 minus the highest
     outstanding balance of loans from the Plan during the one-year period
     before the date on which such loan was made.

     For purposes of the limitations of this subsection (a), loans made to a
     Participant from a tax-qualified plan maintained by an Affiliate shall be
     considered as being made from the Plan, and all qualified employer plans of
     the Company and all Affiliates shall be treated as one plan. The minimum
     amount which a Participant may borrow from his or her Plan Accounts is
     $1,000 per loan, with larger amounts in additional increments of $500.

(b)  A loan shall by its terms be required to be repaid within five years unless
     the loan is used to acquire a single dwelling unit which within a
     reasonable time is to be used (determined at the time the loan is made) as
     the principal residence of the Participant. A loan must be repaid in
     substantially equal installments on each payday. A Participant may have no
     more than two loans outstanding at any time. A Participant may prepay all
     of the remaining principal balance of a loan at any time, but partial
     prepayments are not permitted.

(c)  A loan shall be made on such terms of repayment and interest and subject to
     such rules and restrictions as the Committee shall determine, provided that
     any such loans shall be available to all Participants on a reasonably
     equivalent basis, bear a reasonable rate of interest, and be adequately
     secured. For purposes of the preceding sentence, the term "a reasonable
     rate of interest" shall mean the fixed interest rate which would be charged
     by The Northern Trust Company for a commercial loan secured by a savings
     account. The applicable interest rate for a loan application shall be
     updated monthly and shall be the commercial loan rate in effect


                                      -49-

 
     approximately two months before the application is submitted. The loan
     shall be made as of the Valuation Date and shall be disbursed as soon as
     practicable thereafter, and the Participant shall not be obligated to pay
     (nor be entitled to receive) interest on the funds from the Valuation Date
     to the date of disbursement.

(d)  The loan to the Participant shall be made from the Participant's Accounts
     in the following order:

     (1)  Rollover Deposit Account,

     (2)  ESOP Contribution Account,

     (3)  Vested Portion of Matching Contribution Account,

     (4)  Vested Portion of Acquired Company Prior Plan Account,

     (5)  After-Tax Deposit Account,

     (6)  Basic Contribution Account, and

     (7)  Before-Tax Deposit Account.

     Any loan from an Account shall be charged against the Account's investment
     in the Investment Funds in the order designated--

     (1)  Short Term Fund,

     (2)  Benchmark Fund--Bond Portfolio,

     (3)  Benchmark Fund--Balanced Portfolio,

     (4)  Benchmark Fund--Equity Index Portfolio,

     (5)  Benchmark Fund--Focused Growth Portfolio, and

     (6)  The Northern Trust Stock Fund (if applicable), subject to the last
          paragraph of section 6.4.

     The note representing the loan (and other loans to the same Participant)
     shall be segregated in a separate fund held by the Trustee as a separate
     earmarked investment solely for the account of the Participant. A
     Participant's payments to the Trust of principal and interest on a note
     held 

                                      -50-

 
     in such a segregated fund shall be invested, as soon as practicable,
     in such one or more of the Investment Funds in the same manner as deposits
     or contributions to each applicable Account are invested from time to
     time.

(e)  The entire unpaid balance of any loan made under this Article and all
     interest due thereon, shall, at the option of the Committee, immediately
     become due and payable without further notice or demand, if one of the
     following events of default occurs:

     (1)  with respect to a Participant, any payments of principal or accrued
          interest on the loan remain due and unpaid for a period of 90 days;

     (2)  with respect to a Participant on an unpaid leave of absence, any
          payments of principal or accrued interest on the loan remain due and
          unpaid for a period of one year;

     (3)  a Participant's employment with the Company or an Affiliate terminates
          and he or she is not a Party in Interest; or

     (4)  the borrowing Participant terminates employment and does not make full
          repayment prior to receiving a final distribution of the balance of
          his or her Account.

(f)  If (i) an event of default under section 8.9(e) occurs; and (ii) an
     event occurs pursuant to which the Member or the Member's beneficiary
     will receive a distribution under the provisions of the Plan, then
     such Member shall pay to the Trustee an amount equal to the portion of
     the loan or loans then outstanding, including all accrued interest
     thereon, and such Member shall thereafter receive the full amount of
     the distribution under the provisions of the Plan to which the Member is
     otherwise entitled. If such Member is not then living, or if such Member
     does not make full payment of the portion of the loan or loans then
     outstanding, then the unpaid balance of the loan or loans will be deemed to
     be distributed to the borrowing Member, to the extent such distribution
     would be allowed under the terms of the Plan, on the last date by which
     full payment should have been made. The amount of the deemed distribution
     will be deducted from the borrowing Member's applicable Accounts and paid
     to the Trustee as payment on the loan or loans.


                                      -51-

 
Article IX.  Distribution of Benefits

9.1 Termination of Service

Subject to section 8.5, a benefit payable to a Participant upon a Break in
Service shall be distributed in one lump sum.

9.2 Death

A benefit payable to a Beneficiary upon the death of a Participant shall be
distributed in one lump sum.

9.3 Time and Amount of Payment

A lump sum payment shall be made as soon as reasonably practicable (and under
ordinary circumstances in no more than 45 days) after the date on which the
Participant's retirement, Permanent Disability, death or other termination of
employment occurs, subject to the completion of any applicable benefit consent,
claim or claim review procedures. The amount of such distribution shall be
determined as of the Valuation Date coincident with or immediately preceding
the date distribution is made to the Participant.

9.4 Deferral of Payment of Benefit

If a Member or his or her Beneficiary could receive a Matching Contribution for
the calendar year in which the Participant terminates his or her participation
in the Plan, then notwithstanding section 9.3, the Member or Beneficiary may
elect to defer payment under that section until the Company makes a Matching
Contribution, or if none, until the Company announces that no such contribution
will be made. In such case, the lump sum payment shall be made as soon as
reasonably practicable (but in no event more than 45 days) after the Valuation
Date immediately following that date. Until such Valuation Date, the Account of
a Member or Beneficiary shall be treated in all respects as are the Accounts of
continuing Participants, except that (a) no additions to such Accounts may be
made and (b) the Member or Beneficiary may not exercise the rights granted under
sections 8.7, 8.8 and 8.9.

9.5 Distributions from Northern Trust Stock Fund

A benefit normally will be distributed in cash, although the Committee may make
distribution partly or wholly in kind. Notwithstanding the foregoing, upon the
request of a Member or his or her Beneficiary (in a form acceptable to the
Committee), as the case may be, distribution of the Member's interest in The
Northern Trust Stock Fund shall be made in kind in full shares of common stock
of Northern Trust Corporation, with any balance representing a fraction of a
share being paid in cash. Such distributions shall be made as soon as


                                     -52-

 
reasonably practicable after the Valuation Date as of which such benefit is
determined, and all distributions with respect to any Valuation Date shall be
made on the same date. Common stock of Northern Trust Corporation and other
property distributed in kind shall be valued at its fair market value on the
Valuation Date as of which the benefit is determined.

9.6 Direct Rollover of Eligible Rollover Distributions

(a)  This section 9.6 applies to distributions made on or after January 1, 1993.
     Notwithstanding any provision of the Plan to the contrary that would
     otherwise limit a distributee's election under this section, a distributee
     may elect, at the time and in the manner prescribed by the Committee, to
     have any portion of an eligible rollover distribution paid directly to an
     eligible retirement plan specified by the distributee in a direct
     rollover. Any portion of an eligible rollover distribution that is not paid
     directly to an eligible retirement plan in a direct rollover shall be
     subject to 20% Federal income tax withholding.

(b)  DEFINITIONS.

     (1)  ELIGIBLE ROLLOVER DISTRIBUTION.  An eligible rollover distribution is
          any distribution of all or any portion of the balance to the credit of
          the distributee, except that an eligible rollover distribution does
          not include: any distribution that is one of a series of substantially
          equal periodic payments (not less frequently than annually) made for
          the life (or life expectancy) of the distributee or the joint lives
          (or joint life expectancies) of the distributee and the distributee's
          designated beneficiary, or for a specified period of ten years or
          more; any distribution to the extent such distribution is required
          under section 401(a)(9) of the Code; the portion of any distribution
          that is not included in gross income (determined without regard to the
          exclusion for net unrealized appreciation with respect to employer
          securities); and any distribution that is made to satisfy the
          limitations set forth in section 4.3 of the Plan.

     (2)  ELIGIBLE RETIREMENT PLAN.  An eligible retirement plan is an
          individual retirement account described in section 408(a) of the Code,
          an individual retirement annuity described in section 408(b) of the
          Code, an annuity plan described in section 403(a) of the Code, or a
          qualified trust described in section 401(a) of the Code, that accepts
          the distributee's rollover distribution. However, in the case of an
          eligible rollover distribution to the surviving Spouse, an eligible
          retirement plan is an individual retirement account or individual
          retirement annuity.

                                      -53-

 
     (3)  DISTRIBUTEE. A distributee includes a Member or former Member. In
          addition, the Member's or former Member's surviving Spouse and the
          Member's or former Member's Spouse or former Spouse who is the
          alternate payee under a qualified domestic relations order, as defined
          in section 414(p) of the Code, are distributees with regard to the
          interest of the Spouse or former Spouse.

     (4)  DIRECT ROLLOVER.  A direct rollover is a payment by the Plan to the
          eligible retirement plan specified by the distributee.


                                      -54-

 
Article X. Plan Administration

10.1 Powers

The Committee shall have all powers necessary to discharge its duties in
administering the Plan including, but not by way of limitation, discretionary
authority with respect to the following powers:

(a)  to construe and interpret the Plan;

(b)  to determine all questions regarding the status and rights of Members and
     Beneficiaries, including questions relating to age, Vesting Service,
     eligibility, or Salary;

(c)  to make and enforce such rules and regulations as it shall deem necessary
     or proper for efficient administration of the Plan; and

(d)  to retain counsel, employ agents, and actuaries and provide for such
     clerical, medical, accounting, auditing, and other services as it may
     require in carrying out the provisions of the Plan;

provided, however, that no member of the Committee shall participate in any
action on any matter involving solely his or her own rights or benefits or those
of his or her Spouse or children, and such matters shall be determined by the
other members of the Committee. The Committee may delegate any or all of its
powers under this Article X to an agent designated under section 10.1(d). Any
such designation shall be in writing, signed by the Secretary of the Committee.

10.2 Directions to Trustee

The Committee shall direct the Trustee concerning all payments which shall be
made out of the Thrift Trust pursuant to the provisions of the Plan. Any
direction to the Trustee shall be in writing, signed by the Secretary of the
Committee or any member thereof, or any agent to whom authority has been
delegated. The Trustee shall act in a manner consistent with any such direction
that is proper, made in accordance with the Plan, and not contrary to ERISA.

10.3 Uniform Rules

All rules adopted and all actions taken by the Committee shall be uniform in
nature as applied to all persons similarly situated and shall not discriminate
in favor of Employees who are officers, shareholders, or highly compensated 
employees.

                                      -55-

 
10.4 Reports

The Committee shall keep on file, in such form as it shall deem convenient and
proper, all reports of the Thrift Trust received from the Trustee. The
Committee shall give to each Member a written report of the amount of his or
her Account at annual or more frequent intervals. Additional reports may be
given to a Member by telephone.

10.5 Compensation

Members of the Committee shall not receive compensation for their service in
connection with the Plan, but the Company shall reimburse them for any necessary
expenses incurred in the discharge of their duties.

10.6 Claims Procedure

(a)  Claims for benefits under the Plan shall be made in writing to the
     Committee. If the Committee wholly or partially denies a claim for
     benefits, the Committee shall, within a reasonable period of time, but no
     later than 90 days after receipt of the claim, notify the claimant in
     writing of the denial of the claim. Notice of a denial of a claim shall be
     written in a manner calculated to be understood by the claimant and shall
     contain (1) the specific reason or reasons for denial of the claim, (2) a
     specific reference to the pertinent Plan provisions upon which the denial
     is based, (3) a description of any additional material or information
     necessary for the claimant to perfect the claim, together with an
     explanation of why such material or information is necessary, and (4) an
     explanation of the Plan's review procedure. If notice of the denial of a
     claim is not furnished in accordance with this subsection (a) within 90
     days after the Committee receives it, the claim shall be deemed denied and
     the claimant shall be permitted to proceed to the review stage described
     in subparagraph (b) below.

(b)  Within 60 days after the claimant receives the written notice of denial of
     the claim, or the date the claim is deemed denied pursuant to subsection
     (a) above, or such later time as shall be deemed reasonable taking into
     account the nature of the benefit subject to the claim and other attendant
     circumstances, or within 60 days after the claim is deemed denied as set
     forth above, if applicable, the claimant may file a written request with
     the Committee that it conduct a full and fair review of the denial of the
     claimant's claim for benefits, including the holding of a hearing, if
     deemed necessary by the Committee. In connection with the claimant's
     appeal of the denial of the claimant's benefit, the claimant may review
     pertinent documents and may submit issues and comments in writing. The
     Committee shall render a decision on the appeal promptly, but not later

                                      -56-

 
     than 60 days after the receipt of the claimant's request for review,
     unless special circumstances (such as the need to hold a hearing, if
     necessary) require an extension of time for processing, in which case the
     60-day period may be extended to 120 days. The Committee shall notify the
     claimant in writing of any such extension. Such decision shall (1) include
     specific reasons for the decision, (2) be written in a manner calculated
     to be understood by the claimant, and (3) contain specific references to
     the pertinent Plan provisions upon which the decision is based.

10.7 Indemnity for Liability

The Company shall indemnify the Committee and each other fiduciary who is an
Employee of the Company, against any and all claims, losses, damages, expenses,
including counsel fees, incurred by said fiduciaries, and any liability,
including any amounts paid in settlement with such a fiduciary's approval,
arising from the fiduciary's action or failure to act, except when the same is
judicially determined to be attributable to the gross negligence or willful
misconduct of such fiduciary.

                                      -57-

 
Article XI. Amendment and Termination

11.1 Amendment

The Company reserves the right at any time and from time to time to amend the
Plan in whole or in part either retroactively or prospectively by action of the
Board of Directors or action of the Executive Committee of the Board of
Directors, but no such amendment shall authorize or permit any part of the
corpus or income of the Thrift Trust to be used for or diverted to purposes
other than for the exclusive benefit of Members or their Beneficiaries, or to
deprive any of them of any funds then held for his or her account.

11.2 Termination

It is the intention of the Company to continue the Plan and to make
contributions thereto, but the Company reserves the right to terminate the Plan
in whole or in part as of any Valuation Date by action of the Board of Directors
or action of the Executive Committee of the Board of Directors and for any
reason satisfactory to the Board of Directors. Upon partial or full termination,
all affected Participants shall become fully vested, and upon permanent
discontinuance of contributions by the Company, all Members shall become fully
vested.

11.3 Merger, Sale

In the event of any merger or consolidation of the Plan with, or transfer in
whole or in part of the assets and liabilities of the Thrift Trust to another
trust fund held under any other plan of deferred compensation maintained or to
be established for the benefit of all or some of the Participants, the Plan
shall be so merged or consolidated, or the assets of the Thrift Trust applicable
to such Participants shall be so transferred, only if--

(a)  each Member would (if either the Plan or the other plan then terminated)
     receive a benefit immediately after the merger, consolidation, or transfer
     which is equal to or greater than the benefit he or she would have been
     entitled to receive immediately before the merger, consolidation, or
     transfer (if the Plan had then terminated);

(b)  resolutions of the Board of Directors or of any new or successor employer
     of the affected Members, shall authorize such transfer of assets; and, in
     the case of the new or successor employer of the affected Members, its 
     resolutions shall include an assumption of liabilities with respect to such
     Members' inclusion in the new employer's plan; and

                                      -58-

 
(c)  such other plan and trust are qualified under section 401(a) and exempt
     under section 501(a) of the Code.

In the event a portion of the business of the Company is sold or discontinued,
the Board of Directors in its discretion may direct that all Members who are
employed by the new owner of that portion of the business shall become fully
vested.

11.4 Distribution Upon Termination

To the extent permitted under section 401(k)(10), in the event of the
termination of the Plan, there shall be distributed to each Member, or to his or
her Beneficiary in the case of a deceased Member, a benefit equal to the sum of
the value of the Member's Account as of the Valuation Date on which termination
occurs. If such benefits shall not exhaust the assets of the Thrift Trust, any
remaining assets shall be allocated to the Matching Contribution Accounts of the
Members as though they were additional Company contributions, and in no event
shall any such assets revert to the Company or any Participating Employer.


                                      -59-

 
Article XII. Extension of Plan to Affiliates

12.1 Participation in the Plan

Any Affiliate which desires to become a Participating Employer under the Plan
may elect, with the consent of the Board of Directors, to become a party to the
Plan and the related Thrift Trust by adopting the Plan for the benefit of its
Eligible Employees, effective as of the date specified in such adoption. The
adoption resolution or decision may contain such specific changes and variations
in Plan or Trust Agreement terms and provisions applicable to such Participating
Employer and its Employees as may be acceptable to the Board of Directors and
the Trustee. However, the sole, exclusive right of any other amendment of
whatever kind or extent to the Plan is reserved to the Board of Directors. The
Board of Directors may amend specific changes and variations in the Plan or
Thrift Trust terms and provisions as adopted by the Participating Employer in
its adoption resolution without the consent of such Participating Employer. The
adoption resolution or decision shall become, as to such adopting organization
and its employees, a part of this Plan as then amended or thereafter amended
and the related Pension Trust. It shall not be necessary for the adopting
organization to sign or execute the original or then amended Plan and Thrift
Trust. The coverage date of the Plan for any such adopting organization shall be
that stated in the resolution or decision of adoption, and from and after such
effective date, such adopting organization shall assume all the rights,
obligations, and liabilities of an individual employer entity hereunder and
under the Thrift Trust. The administrative powers and control of the Company,
as provided in the Plan and Trust Agreement shall not be diminished by reason of
the participation of any such adopting organization in the Plan and Trust
Agreement.

12.2 Withdrawal from the Plan

Any Participating Employer may withdraw from the Plan and Thrift Trust after
giving notice to the Board of Directors, provided the Board of Directors
consents to such withdrawal. In the event of such a withdrawal, the Committee
shall cause a valuation of the Trust Fund to be made to ascertain the value of
assets of each of the Investment Funds which are attributable to Members who are
Employees of the terminating Participating Employer or their Beneficiaries in
the case of deceased Members and shall direct the Trustee to segregate assets
of each of the Investment Funds which are deemed to be so attributable, together
with all loans to such Members from the Thrift Trust, and to make distribution
to the Members or their Beneficiaries as if the Plan had terminated with
respect to the Members or their Beneficiaries of the terminating Participating
Employer.

                                      -60-

 
In the event such withdrawal constitutes a partial termination of this Plan,
only the affected Participants shall have fully vested and nonforfeitable rights
in the benefits to be provided by the allocations (unless they were already 
fully vested prior to the partial termination). Distribution may be implemented
through continuation of the Thrift Trust, or transfer to another trust fund
exempt from tax under section 501 of the Code, or to a group annuity contract
qualified under Code section 401, or distribution may be made as an immediate
cash payment; provided, however, that such distribution is permitted pursuant
to section 401(k)(10) of the Code, and provided, further, that no such action
shall divert any part of such fund to any purpose other than the exclusive
benefit of the Employees of such Participating Employer.

                                      -61-

 
Article XIII. Top-Heavy Provisions

The following provisions shall become effective in any Plan Year in which the
Plan is determined to be a top-heavy plan.

(a)  DETERMINATION OF TOP-HEAVY. The Plan will be considered a top-heavy plan
     for the Plan Year if as of the last day of the preceding Plan Year (1) the
     account balances of Participants who are key employees (as defined in
     section 416(i) of the Code) exceeds 60 percent of the a ccount balances of
     all Participants (the "60 Percent Test") or (2) the Plan is part of a
     required aggregation group and the required aggregation group is top-heavy.
     However, and notwithstanding the results of the 60 Percent Test, the Plan
     shall not be considered a top-heavy plan for any plan year in which the
     Plan is a part of a required or permissive aggregation group which is not
     top-heavy. The top-heavy ratio shall be computed pursuant to section
     416(g) of the Code and the regulations issued thereunder. A "required
     aggregation group" is each plan of the Company in which a key employee is
     a participant and each other plan of the Company, if any, which enables
     such plan to meet the requirements of Code section 401(a)(4) or 410 . The
     Company may treat any plan not required to be included in an aggregation
     group as being part of a "permissive aggregation group" if such group would
     continue to meet the requirements of Code sections 401(a)(4) and 410 with
     such plan being taken into account.

(b)  MINIMUM BENEFIT. The Company's contribution to a Participant's Matching
     Contribution Account under section 5.1 shall be increased as necessary so
     that it equals at least 3 percent of the Participant's "compensation" (as
     defined in section 5.2(f)(3)), except that this subsection (b) shall not
     apply if--

     (1)  the Participant is also a participant in the Pension Plan,

     (2)  the Pension Plan is a top-heavy plan, and

     (3)  the Participant receives from the Pension Plan the defined benefit
          minimum required under section 416(c)(1) of the Code.

                                      -62-

 
Article XIV. Miscellaneous Provisions

14.1 Spendthrift Provisions

The interests of Members and Beneficiaries in the Plan shall not be subject to
the claims of any creditor, any Spouse for alimony or support, or others, or to
legal process, and may not be voluntarily or involuntarily alienated or
encumbered, except that the interests of a Member may be subject to loans from
the Thrift Trust to the Member.

Notwithstanding the foregoing, the Plan shall make all payments required by a
qualified domestic relations order within the meaning of Code section 414(p).
The Committee shall establish a procedure to determine the qualified status of a
domestic relations order and to administer distributions under a qualified
order. In no event shall a domestic relations order be determined to be a
qualified domestic relations order if it requires the Plan to make distributions
to an alternate payee prior to the date that a Participant attains "earliest
retirement age." Notwithstanding the foregoing, the Plan may make a
distribution to an alternate payee prior to the date that a Participant attains
"earliest retirement age" if the qualified domestic relations order provides
that the Plan and the alternate payee may agree in writing to the earlier
distribution and the distribution is made pursuant to such a written agreement.
For purposes of a qualified domestic relations order "earliest retirement age"
means the date on which the earliest to occur of--

(a)  the date the Member is entitled to a distribution under this Plan, or
     terminates from employment,

(b)  the later of (i) the date the Member attains age 50, or (ii) the earliest
     date on which the Member could begin receiving benefits under this Plan if
     the Member separated from service.

14.2 Incompetency

Every person receiving or claiming benefits under the Plan shall be presumed to
be mentally competent and of age until the Committee receives a written notice,
in a form and manner acceptable to it, that such person is incompetent or a
minor, and that a guardian, conservator, or other person legally vested with
the care of his estate has been appointed. In the event that the Committee finds
that any person to whom a benefit is payable under the Plan is unable to
properly care for his or her affairs, or is a minor, then any payment due
(unless a prior claim therefor shall have been made by a duly appointed legal
representative) may be paid to the Spouse, a child, a parent, or a brother or
sister, or to any person deemed by the Committee to be authorized to care for
such person otherwise entitled to payment.

                                      -63-

 
In the event a guardian, executor, administrator, or conservator of the estate
of any person receiving or claiming benefits under the Plan shall be appointed
by a court of competent jurisdiction, payments shall be made to such guardian,
executor, administrator, or conservator provided that proper proof of
appointment is furnished in a form and manner suitable to the Committee. Any
payment made under the provisions of this section 14.2 shall be a complete
discharge of any liability therefor under the Plan.

14.3 Unclaims Funds

Each Participant shall keep the Committee informed of the Participant's current
address and the current address of the Participant's Spouse and Beneficiaries.
Neither the Company or any Affiliate, the Committee, nor the Trustee shall be
obligated to search for the whereabouts of any such person. If the then current
location of a Participant is not made known to the Committee within three years
after the date on which the Committee directs the distribution to the
Participant of the Participant's Accounts, distribution may be made as though
the Participant had died at the end of the three-year period. If, within one
additional year after such three-year period has elapsed, or within three years
after the actual death of a Participant, the Committee is unable to locate any
individual who would receive a distribution upon the death of the Participant
pursuant to Article VIII, the Participant's Accounts shall be deemed a
Forfeiture and shall be used to reduce Company contributions to the Plan for the
Plan Year next following the year in which the Forfeiture occurs; provided,
however, that if the Participant, Beneficiary, or Spouse makes a claim at any
time for any amount that has been so forfeited, the forfeited benefits shall be
reinstated. The amount required to restore such benefits shall be made up from
Forfeitures and, to the extent necessary, Company or Participating Employer
contributions prior to their allocation pursuant to section 5.4.

14.4 Rights Against the Company

Neither the establishment of the Plan, nor of the Thrift Trust, nor any
modification thereof, nor any distributions hereunder shall be construed as
giving to any person whomsoever any legal or equitable rights against the
Committee, the Company, or the officers, directors, or shareholders as such of
the Company, or as giving any Employee or Member the right to be retained in
the employ of the Company. All benefits payable under the Plan shall be paid or
provided for solely from the Thrift Trust, and the Company shall have no
liability or responsibility for benefit distributions other than to make
contributions to the Thrift Trust as herein provided.

                                      -64-

 
14.5 Illegality of Particular Provision

The illegality of any particular provision of this Plan shall not affect the
other provisions thereof, but the Plan shall be construed in all respects as if
such invalid provision were omitted.

14.6 Effect of Mistake

In the event of a mistake or misstatement as to the age, eligibility,
compensation, service or participation of a Member or the amount of
distributions made or to be made to a Member or other person, the Committee
shall, to the extent it deems possible, cause to be withheld or accelerated, or
otherwise make adjustment of, such amounts as will in its judgment accord to
such Member or other person, or distribution to which he or she is properly
entitled under the Plan.

14.7 No Discrimination

Whenever in the administration of the Plan action by the Committee is required
with respect to eligibility or classification of Employees, contributions, or
benefits, such action shall be uniform in nature as applied to all persons
similarly situated, and no such action shall discriminate in favor of Employees
who are Highly Compensated Employees.

14.8 Exclusive Benefit of Members

(a)  All contributions made pursuant to the Plan shall be held by the Trustee in
     accordance with the terms of the Thrift Trust for the exclusive benefit of
     those Employees who are Participants under the Plan, including former
     Employees, Beneficiaries, and Spouses, and shall be applied to provide
     benefits under the Plan and to pay expenses of administration of the Plan
     and the Thrift Trust to the extent that such expenses are not otherwise
     paid. At no time prior to the satisfaction of all liabilities with respect
     to such Participants, former Employees, Beneficiaries, and Spouses shall
     any part of the Trust (other than such part as may be required to pay
     administration expenses) be used for, or diverted to, purposes other than
     the exclusive benefit of such Participants, former Employees,
     Beneficiaries, and Spouses.

(b)  Notwithstanding section 14.8(a)--

     (1)  if a contribution by the Company or a Participating Employer is
          conditioned upon the deductibility of such contribution under section
          404 of the Code, then, to the extent the deduction is disallowed, the
          Trustee shall, upon written request of the Company or Participating
          Employer making the contribution, return the contribution to the

                                      -65-

 
          extent disallowed to the Company or Participating Employer within one
          year after the date the deduction is disallowed;

     (2)  if a contribution, or any portion thereof, by the Company or a
          Participating Employer is made by mistake of fact, the Trustee shall,
          upon written request of the Company or Participating Employer, return
          the contribution or the portion to the Company or Participating
          Employer within one year after the date of payment to the Trustee; and

     (3)  earnings attributable to amounts to be returned to the Company or
          Participating Employer pursuant to paragraph (1) or (2) shall not be
          returned to the Company or Participating Employer, and losses
          attributable to amounts to be returned pursuant to paragraph (1) or
          (2) shall reduce the amount to be so returned.

14.9 Governing Law

The provisions of the Plan shall be construed, administered, and enforced in
accordance with the laws of Illinois, to the extent such laws are not
superseded by laws of the United States. All Employer Contributions to the
Trust shall be deemed to be made in Illinois.

                                  * * * * * *

In Witness Whereof, the Company has caused this Plan to be executed on its
behalf by its duly authorized officer this 21st day of November, 1995.


                                       THE NORTHERN TRUST COMPANY
                                                            


                                       By /s/ Martin Joyce Jr.

ATTEST:



By /s/ Mary T. Jamieson 

                                      -66-

 
                              AMENDMENT NUMBER ONE
                                       TO
                           THE NORTHERN TRUST COMPANY
                             THRIFT-INCENTIVE PLAN

WHEREAS, The Northern Trust Company (the "Company") maintains The Northern Trust
Company Thrift-Incentive Plan, as amended and restated effective January 1, 1989
(the "Plan"); and

WHEREAS, amendment of the Plan is now deemed desirable in order to clarify
certain provisions of the Plan;

NOW, THEREFORE, by virtue and in exercise of the amending power reserved to the
Company under Section 11.1 of the Plan, and pursuant to the authority delegated
to the undersigned officer in a resolution of the Board of Directors dated July
18, 1995, the Plan is hereby amended effective January 1, 1989, or as otherwise
indicated below, in the following particulars:

l.   Section 3.4(a) is amended in its entirety to read as follows:

"(a) Vesting Service shall be computed on the following bases: (i) prior to July
l, l993, an Employee shall receive credit for each calendar quarter during which
the Employee earned at least one (1) Hour of Service or otherwise would receive
credit for Vesting Service pursuant to this subsection (b) below; and (ii) from
and after July l, l993, an Employee shall receive credit for each calendar month
during which the Employee earned at least one (1) Hour of Service or otherwise
would receive credit for Vesting Service pursuant to subsection (b) below."

2.   Section 3.4(b)(i) is amended in its entirety to read as follows:

"(i)  an approved absence of up to 12 months from the Company or an Affiliate
(e.g. vacation, paid holiday, sick, short term disability, long term disability,
Family Medical Leave, unpaid leave of absence) that is granted according to
uniform and nondiscriminatory standards."

3.   Section 3.4(b)(ii) is deleted in its entirety.

4.   Section 3.4(b)(iii) is redesignated as 3.4(b)(ii) and amended in its
entirety to read as follows:

"(ii)  a period of up to one (1) year during which an Employee is on Parental
Leave; and"

5.   Section 3.4(b)(iv) is redesignated as 3.4(b)(iii).




 
6.   Section 3.6(b) is amended to delete the words "or Credited Service" in the
first and last sentences, and to add the word "or" immediately before "Vesting
Service" in the last sentence.

7.   Section 4.5 is amended in its entirety to read as follows, effective
November 21, 1995:

"4.5  TREATMENT OF ASSOCIATED MATCHING CONTRIBUTIONS.

Any matching contribution that is associated with a Salary Reduction
Contribution made by the Company for a Highly Compensated Participant that is
reduced for a Plan Year pursuant to Section 4.3(c) shall be forfeited, and shall
be treated as a Forfeiture in accordance with Section 5.4."

8.   Section 6.6 is amended to delete the word "the" immediately before "several
Investment Funds" in the first sentence.

9.   Section 8.7(b) is amended to add the words "in the order designated:" at
the end of the first sentence.

10.  Section 8.7(b) is amended to delete the word "is" in the first sentence of
the last paragraph.

11.  Section 8.7(c) is amended to replace the last sentence of the last
paragraph with the following, effective March 14, 1995:

"After calendar year 1993, and until March 14, 1995, the minimum amount which a
Participant may withdraw from his or her Plan Accounts as of right under Section
8.7(a) is $1,000 per withdrawal, with the Accounts being valued as of the
preceding Valuation Date."

12.  Section 8.8 (a)(3) is amended in its entirety to read as follows, effective
January 1, 1995:

"(3) payment of tuition, room and board and related educational fees for the
     next 12 months of post-secondary education for the Participant or his or
     her Spouse, children, or dependents,"

13.  Section 8.8(c) is amended to replace the second full paragraph with the
following, effective January 1, 1995:

"The Committee shall determine the place, in the foregoing order, for any other
Fund established pursuant to Section 6.1.  Before January l, l995, a Participant
may withdraw from his or her Account no more than six times in a calendar year;
provided, however, that the Committee shall not accept applications for hardship
withdrawals during February 1995.  After January l, 1995 there are no limits on
the number of hardship withdrawals.  A Participant's directions for withdrawals
shall be subject to such 


                                       2

 
reasonable and nondiscriminatory deadlines and in such written, electronic or
other form as the Committee shall determine."

14.  Section 8.9(a) is amended to replace the last sentence of the first
paragraph with the following, effective November 21, 1995:

"The amount of the loan shall not exceed $50,000, reduced by the excess, if any,
of--

(1)  the highest outstanding balance of all loans to the Participant from the
     Plan during the one-year period ending on the day immediately before the
     date on which the loan was made, over

(2)  the outstanding balance of all loans from the Plan to the Participant on
     the date on which the loan was made;

provided, however, that no loan shall be made to a Participant if the aggregate
amount of that loan and the outstanding balance of any other loan to the
Participant from the Plan would exceed one-half of the total vested balance of
the Participant's Accounts under the Plan as of the date the loan is made."

15.  Section 8.9(f) is amended in its entirety to read as follows:

(f)  "If the unpaid balance of principal and interest on any loan is not paid at
     the expiration of its term, or upon acceleration in accordance with Section
     8.9(e), a default shall occur and the vested portion of the Participant's
     Accounts shall be applied in satisfaction of such loan obligation, but only
     to the extent that such vested interest is then distributable."

16.  Section 14.1 is amended to replace the second full paragraph with the
following:

"Notwithstanding the foregoing, the Plan shall make all payments required by a
qualified domestic relations order within the meaning of Code section 414(p).
The Committee shall establish a procedure to determine the qualified status of a
domestic relations order and to administer distributions under a qualified
order.  If the qualified domestic relations order so provides, the Plan may make
a distribution to an alternate payee prior to the date that a Member attains
"earliest retirement age."  For purposes of a qualified domestic relations
order, "earliest retirement age" means the earlier of--

(a)  the date the Member is entitled to a distribution under this Plan, or

(b)  the later of (i) the date the Member attains age 50, or (ii) the earliest
     date on which the Member could begin receiving benefits under this Plan if
     the member separated from service."

17.  Schedule A is amended to add "01/04/85" immediately after "Purchase of
Master Trust Services Unit of FNBC" in the "Affiliate Name" column.

                                       3


IN WITNESS WHEREOF, the Company has caused this amendment to be executed on its 
behalf by the undersigned officer this 21st day of November, 1995.

                                       /s/ Martin J. Joyce, Jr.
                                       ______________________________
                                       Martin J. Joyce, Jr.
                                       Senior Vice President



                                       4


                             AMENDMENT NUMBER TWO
                                      TO
                          THE NORTHERN TRUST COMPANY
                             THRIFT-INCENTIVE PLAN


WHEREAS, The Northern Trust Company (the "Company") maintains The Northern Trust
Company Thrift-Incentive Plan, as amended and restated effective January 1, 1989
(the "Plan"); and

WHEREAS, by virtue and in exercise of the amending power reserved to the Company
under Section 11.1 of the Plan, the Board of Directors amended the Plan by 
resolution dated December 19, 1995, and authorized the undersigned officer to 
prepare and execute an amendment implementing such resolution;

NOW, THEREFORE, the Plan is amended effective January 1, 1996, except as 
otherwise indicated below, in the following particulars:

     1. Schedule A of the Plan is amended by adding "Tanglewood Bank, N.A. 
Acquired July 31, 1995" to the end of the Affiliate Name column, and by adding 
"DOH w/Tanglewood (before or after acquisition)" to the end of the TIP Earliest 
Vesting Date column.

     2. The following Supplement #1 is added to the Plan, immediately following 
Schedule A thereof:


                                "SUPPLEMENT #1

                     Special Rules for Former Employees of
                             Tanglewood Bank, N.A.

This Supplement #1 to The Northern Trust Company Thrift-Incentive Plan, as 
amended and restated effective as of January 1, 1989 (the "Plan"), is made a 
part of the Plan and supersedes any provisions thereof to the extent that they 
are not consistent with this Supplement. Unless the context clearly implies or 
indicates to the contrary, a word, term or phrase used or defined in the Plan is
similarly used or defined for purposes of this Supplement #1.

1.   Effective Date. January 1, 1996.

2.   Application. This Supplement #1 shall apply to individuals who immediately 
after the July 31, 1995 acquisition were employees of Tanglewood Bank, N.A., or 
who had Account balances under the Tanglewood Bank, N.A. Employees' Salary 
Deferral Plan (the "Tanglewood

                                       1

 
Plan") which were transferred to this Plan (each such individual hereafter 
referred to as a "Tanglewood Participant").

3.   Special Provisions. The following special provisions shall apply to 
Tanglewood Participants:

     (a)  Participation: Each Tanglewood Participant who was eligible to 
          participate in the Tanglewood Plan immediately prior to the effective
          date of this Supplement #1 shall be eligible to participate in the 
          Plan on January 1, 1996. All other Tanglewood Participants shall be
          eligible to participate in the plan in accordance with its terms.

     (b)  Vesting Service: A Tanglewood Participant's Vesting Service shall be 
          equal to the sum of his Vesting Service under the Tanglewood Plan on
          December 31, 1995, plus his Vesting Service determined under section
          3.4 of the Plan, if any, for periods after that date.

     (c)  Minimum Vested Interest: A Tanglewood Participant shall vest in his 
          Account balance under the Plan in accordance with subsection 2.1(zz);
          provided, however, in no event shall his vested interest in his
          Account balance be less than that determined under the vesting
          schedule set forth below:

          Years of                                Vested
          Vesting Service                         Percentage
          ---------------                         ----------

          Less than 2 years                           0%
          2 years but less than 3 years              40%
          3 years but less than 4 years              50%      
          4 years but less than 5 years              60%      
          5 years but less than 6 years              70%      
          6 years but less than 7 years              80%      
          7 or more years                           100%      

     (d)  Investment of Tanglewood Plan Account. Notwithstanding the provisions 
          of section 6.1 of the Plan, in no event shall a Tanglewood Participant
          have the right to direct investment of the portion of his Account
          balance attributable to the Tanglewood Plan until such time as the
          assets of the Tanglewood Plan are transferred into the Thrift Trust.

     (e)  Optional Forms of Distribution. In addition to the lump sum 
          distribution provided under section 9.1 of the Plan, if the vested
          interest in a Tanglewood Participant's Accounts is greater than
          $3,500, the Tanglewood Participant may


                                       2

 
     elect to receive a distribution of his vested Account balance under the 
     Plan in one of the following methods:

     (i)  in a series of substantially equal monthly, quarterly, semiannual or 
          annual installments over a period not exceeding the Tanglewood
          Participant's life expectancy (or the life expectancy of the
          Tanglewood Participant and his designated Beneficiary); or

     (ii) by purchase from an insurance company and distribution to him of an 
          annuity contract providing for periodic distributions to him or to him
          and his Beneficiary for his life (with or without a period certain) or
          their joint lives, subject to the provisions of subsection (f) below.

(f)  Special Rules Regarding Annuity Elections. If a married Tanglewood 
     Participant elects distribution in the form of an annuity pursuant to
     paragraph (e)(ii) above, the following rules shall apply and shall
     supersede any other provision of the Plan to the contrary:

     (i)  The vested portions of the Tanglewood Participant's Accounts, less any
          outstanding loan balance distributable in accordance with subsection
          8.9(f) of the Plan, shall be used to purchase a nontransferable "Joint
          and Survivor Annuity" (that is, an annuity payable for the life of the
          Tanglewood Participant with a survivor annuity payable for the life of
          his Spouse which is not less than 50 percent of the amount of the
          annuity payable during the joint lives of the Tanglewood Participant
          and Spouse), unless the Tanglewood Participant elects another form of
          annuity and, if applicable, a Beneficiary other than his Spouse, with
          the consent of his Spouse to such form and Beneficiary. Such election
          to waive the Joint and Survivor Annuity shall not be effective if it
          is made more than 90 days prior to the date as of which benefit
          payments are to commence (the "Distribution Date") or if it is made
          prior to receipt of a written explanation from the Committee of the
          terms and conditions of the Joint and Survivor Annuity, the effect of
          an election of a different annuity form, and the Tanglewood
          Participant's right to consider such election for a period of 30 days,
          and benefits shall not commence until at least 7 days have elapsed
          after receipt of such written information.

     (ii) No consent by the Spouse to the election of a form of annuity other 
          than the Joint and Survivor Annuity and, if applicable, Beneficiary
          other than the Spouse shall be effective unless it is in writing,
          acknowledges the effect of such consent and is witnessed by a notary
          public (unless the Committee determines that there is no Spouse, that
          the Spouse cannot be located or that consent may be waived because of
          such other

                                       3

 
      circumstances as are set forth in regulations or rulings under Code
      section 417).

(iii) During the period between his election of an annuity and his Distribution 
      Date, no loan may be made to a Tanglewood Participant pursuant to section
      8.9, no amount may be withdrawn by the Tanglewood Participant pursuant to
      section 8.7 or 8.8 and no amount may be distributed to the Tanglewood
      Participant pursuant to section 9.3, in any form other than a Joint and
      Survivor Annuity, without the written consent of the Spouse as provided in
      paragraph (f)(ii) above.

(iv)  Subject to paragraph (f)(v) below, if the Tanglewood Participant dies 
      during the period between his election of an annuity and his Distribution
      Date, the vested portions of his Accounts (less any amounts distributed in
      accordance with subsection 8.9(f) of the Plan) shall be paid to his Spouse
      in the form of a life annuity as of the Valuation Date next following the
      date the Participant would have attained age 65 or, if the Spouse so
      elects, as soon as practicable after the Valuation Date next following his
      death; provided, however, that a Spouse to whom payment is due under this
      paragraph (iv) may elect to have such vested portions, if any, distributed
      in the form of a lump sum payment.

(v)   The provisions of paragraph (f)(iv) above shall not apply, and 
      distribution upon the death of the Tanglewood Participant shall be made in
      accordance with paragraph 8.6(b)(2), if the Spouse consents to the
      designation of a Beneficiary other than the Spouse in accordance with
      section 8.2 during the period between the Tanglewood Participant's
      election of an annuity and his death, and acknowledges that such consent
      to the Tanglewood Participant's designation of such Beneficiary
      constitutes the Spouse's consent to the Tanglewood Participant's waiver of
      a qualified preretirement survivor annuity payable to the Spouse in
      accordance with section 417 of the Code.

(vi)  A Tanglewood Participant may revoke his election pursuant to this 
      subsection (f), and may make a new election of any form of distribution
      permitted under the Plan and this Supplement #1, at any time during the
      election period described in paragraph (f)(i) above; provided, however,
      that if the effect of such revocation is to select a distribution form
      other than a Joint and Survivor Annuity, it shall be ineffective without
      the written consent of his Spouse in accordance with paragraph (f)(ii)
      above to the new form of distribution and, if applicable, a Beneficiary
      other than the Spouse.


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     (vii)  A Spouse's consent in accordance with paragraph (f)(ii) above shall 
            be irrevocable.

IN WITNESS WHEREOF, the Company has caused this amendment to be executed on its 
behalf by the undersigned officer as of the 19th day of December, 1995.


/s/ Martin J. Joyce, Jr.
- ------------------------------
Martin J. Joyce, Jr.
Senior Vice President






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